JP2013184727A - Cap having toggle structure containing plant-based polyolefin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toggle structure cap which has a carbon offset property, has a large elevation angle in opening an over cap, and exhibits a favorable snapping property and a cap transfer property in a cap attaching process.SOLUTION: A cap includes a cap body 1, an over cap 2, and a toggle structure, and is integrally formed of a synthetic resin material containing plant-based polyolefin containing polyolefin with a modern carbon rate of 56.7-118 pMC. (i) The toggle structure includes a bendable connecting piece 3a and a pair of support members 3b. (ii) The connecting piece is connected to an outer circumference surface of the cap body and a top plate 2a of the over cap at both ends is connected to the top plate only at an end connected at an inner side of a peripheral edge, has a region with a small cross sectional thickness at a periphery of the end connected to the top plate, and includes a recessed part 3a11 on a surface on a side connecting to an outer surface of the top plate in the region with the small cross sectional thickness. (iii) A synthetic resin of the toggle structure contains 100-4,500 ppm of fatty acid amide having a carbon double bond of an unsaturated cis structure.

Description

  The present invention relates to a cap that allows the contents of a container to be poured out without being removed from the container, and particularly contributes to reduction of greenhouse gas emissions due to the carbon offset property and is characterized by a lid opening / closing mechanism used for the cap. It is related with the cap provided with the toggle structure integrally molded from the synthetic resin material containing polyolefin.

  Containers are usually used for storing or transporting articles or materials. The contents of the container include various things such as viscous liquid materials such as mayonnaise, ketchup, sauce and jelly, liquid materials having relatively high fluidity such as juice and alcoholic beverages, and granular materials. There are a wide variety of container shapes in overall shape and partial shape, and metal, synthetic resin, rubber, paper, ceramics, glass, etc. are used as the material of the container, and these composites and laminates are also used. used.

  For example, as a synthetic resin material container, it is obtained by extruding a cylindrical parison made of synthetic resin material and then blow molding into the shape of the container in a molding die, or by injection molding. An injection-molded container is known. The layer structure of the synthetic resin material container includes a single layer container or a multilayer container, and the synthetic resin material includes polyolefins such as ethylene resins and propylene resins, polyesters such as polyethylene terephthalate, polyamides such as nylon, etc. Is used. As a multilayer plastic resin material container, polyolefin is used as the surface layer (outer layer and / or inner layer), and the intermediate layer has a multilayer structure with a barrier layer such as ethylene / vinyl alcohol copolymer (EVOH). Is widely used.

  Examples of the metal container include a container formed by winding a thin metal plate such as aluminum or steel into a substantially cylindrical shape, or a metal thick plate formed by deep drawing in a substantially cup shape. In addition, as the paper container, there is a paper container in which a plate-shaped paper material is wound to have a substantially cylindrical shape or a prism shape.

[Container recycling]
These various types of containers are being recycled and separated due to the majority of household waste in volume ratios and the growing public opinion of building a recycling-oriented society. Combined with the enactment of the Containers and Packaging Recycling Law and the Law for Promotion of Effective Utilization of Resources, the recycling rate of aluminum containers and PET bottles has improved, and the resource reuse rate has also improved.

  As these containers, a container (also referred to as “bottle”) having a neck having a smaller diameter than the trunk (hereinafter also referred to as “mouth neck”) is widely known. The part (refers to the upper part when the bottle is set upright) has an opening for filling or pouring the contents. A lid or cap (hereinafter sometimes collectively referred to as “cap”) having the same diameter as the neck (mouth neck) of the container is attached to the opening. As the material of the cap, metal, synthetic resin, paper or the like, or a composite material or laminated material thereof is used, and polyolefin is widely used as the synthetic resin. Caps are also subject to recycling under the Containers and Packaging Recycling Law, but resource reuse has not progressed as much as the container body. For example, caps made of synthetic resin materials are rarely burned. Absent.

[Carbon offset]
When a synthetic resin such as polyolefin, such as a cap made of a synthetic resin material such as polyolefin, is combusted, carbon dioxide is generated. Carbon dioxide is one of the gases that warm the global environment, that is, greenhouse gas (also called “green house gas”), and has continued to increase along with industrial activities by people, especially after the industrial revolution. . In order to maintain a global environment where human survival is sustainable, the concept of carbon dioxide that does not increase the total amount of carbon dioxide circulating in the earth's oceans and atmosphere is shared.

  Currently, most of synthetic resin materials, such as polyolefins, are produced using compounds derived from fossil fuels such as petroleum, coal and natural gas as starting materials. As is well known, fossil fuels contain carbon that has been fixed in the ground for many years. Combustion of a fossil fuel or a product derived from a compound derived from fossil fuel and releasing carbon dioxide into the atmosphere means that carbon that is fixed deep in the ground and does not exist in the atmosphere will Since it is suddenly released into the atmosphere as carbon, carbon dioxide in the atmosphere greatly increases, causing global warming.

  On the other hand, even if organisms (plants, animals) that grow by absorbing or changing carbon dioxide circulating in the global environment are burned in the earth's atmosphere and generate carbon dioxide, they exist in the global environment. Therefore, there is no change in the total amount of carbon constituting the carbon dioxide. This carbon entry / exit is said to be a state of carbon offset (carbon offset) or no entry / exit (carbon neutral), and carbon negative (carbon negative) increases carbon dioxide present in the global environment. ).

  Carbon that circulates in the global environment, and the existing carbon is renewable carbon, modern carbon, modern carbon, bio-resourced carbon, biogenic carbon, biomass Carbon derived from fossil fuel, which is said to be the opposite electrode, called bio mass derived carbon, green carbon, atmospheric carbon, environmentally friendly carbon, or life-cycle carbon. (fossil carbon, fossil fuel based carbon, petrochemical based carbon, carbon of fossil origin).

  In particular, plants are organisms that absorb carbon dioxide circulating in the global environment, undergo photosynthesis reactions that use carbon dioxide and water as raw materials, and grow into organisms, and thus are attracting attention as carbon sources. ing. For example, alcohol components, especially ethyl alcohol, are distilled and separated from fermented sugar or cellulose fermented products extracted from plant materials such as sugar cane and corn, and ethylene is obtained as an alkene by its dehydration reaction. Thus, an ethylene resin or an olefin resin can be obtained. Synthetic resins having this history are said to be carbon offset polyolefin, biogenic polyolefin, plant based resin, or the like.

Carbon constituting the carbon dioxide circulating in the global environment is radioactive carbon 14 (also referred to as “ ¹⁴ C”), which is an isotope, and stable carbon 12 (also referred to as “ ¹² C”). ) And metastable carbon 13 (sometimes referred to as “ ¹³ C”), the mass ratio of which is ¹² C (98.892 mass%), ¹³ C (1.18 mass%) and ¹⁴ it is well known that C (a trace amount 1.2 × ^{10 -12} wt% to 1.2 × ^{10 -10} wt%). The ratio between ¹² C and ¹³ C is stable. Also, radioactive ¹⁴ C is generated when neutrons contained in secondary cosmic rays generated by primary cosmic rays in the upper atmosphere collide with nitrogen atoms ( ¹⁴ N) in the atmosphere. Although it fluctuates slightly depending on the level of activity, etc., it continues to be supplied.

Living organisms (plants or animals) that continually breathe or absorb carbon dioxide circulating in the global environment and transform into organisms constitute carbon dioxide that circulates in the global environment during its lifetime 3 Continue to carry on mass proportions of different carbon isotopes. When the organism is killed, the mass ratio of the three types of carbon isotopes inside the organism is fixed at the ratio at the time of death. The half-life of ¹⁴ C is 5730 years, and archaeological dating methods that use this to estimate the age of various samples are well known. On the other hand, ¹⁴ C in the fossil fuel formed after a long period of time has passed since the death of the organisms that lived in ancient times can be regarded as almost 0 (below the detection limit of the measuring instrument), so the synthetic resin derived from fossil fuels The inner ¹⁴ C can be regarded as almost zero.

Therefore, the plant-derived synthetic resin and the fossil fuel-derived synthetic resin can be distinguished by the ratio of ¹⁴ C contained. The time taken to harvest the growing plant, saccharify it into alcohol, and use ethylene, which is the alkene resulting from the dehydration reaction, as a raw material to produce a plant-derived synthetic resin through ordinary resin synthesis means. Is a few months, and can be neglected from the ¹⁴ C half-life of 5730 years. The time lag until the production of plant-derived synthetic resin is either plant-derived synthetic resin or fossil fuel-derived synthetic resin. There is no substantial effect on the discrimination.

The ratio of radioactive ¹⁴ C composing carbon dioxide circulating in the global environment has been diluted and reduced by humans burning large amounts of fossil fuels since the Industrial Revolution, but the atmosphere since 1950 AD It turned to increase by the inner core experiment. That is, the amount of radioactive ¹⁴ C produced by the nuclear test in the atmosphere exceeded the amount of radioactive ¹⁴ C produced by the nuclear reaction of ¹⁴ N. Subsequently, due to the 1964 nuclear test cessation treaty, the ratio of radioactive ¹⁴ C began to decrease after peaking in 1963, and there were fluctuations due to subsequent nuclear accidents, but the ratio of radioactive ¹⁴ C in 1950 Not reached.

Therefore, for the distinction between plant-derived synthetic resins and fossil fuel-derived synthetic resins, a standardization method based on the existence ratio of radioactive ¹⁴ C as of 1950 is known, and the National Bureau of Standards (NIST) ) According to ASTM D6866-11 (Determining the Biobased Control of Solid, Liquid, and Gaseous Samples Using Radiocarbon Analysis). ASTM D6866 is an ASTM (American Society for Testing and Materials) standard that determines the biogenic carbon concentration in solid, liquid, and gas samples using radiocarbon dating. Since it was approved, it has been revised and the current latest standard ASTM D6866-11 is the one revised in July 2011.

The principle defined by ASTM D6866-11 is roughly as follows. In other words, organic substances derived from fossil fuels have been killed or cut off by living organisms (animals and plants) in the era before 1950, and the ratio composition of carbon isotopes at that time is fixed. The abundance ratio of carbon constituting the organic substance is 0 (zero). Therefore, the ratio composition of carbon isotopes is derived from fossil fuel using the unit of modern carbon ratio (percent modern carbon: pMC) defined by the function of ¹³ C / ¹² C, which is a stable ratio, and radioactive ¹⁴ C. The organic material has a modern carbon ratio of 0 pMC (below the detection limit of the measuring instrument. However, organic substances derived from fossil fuels due to radioactive ¹⁴ C contamination derived from nuclear tests and nuclear accidents conducted after 1950 May show 0.01 to 0.03 pMC.) In addition, the standard substance of carbon abundance ratio as of 1950 [oxalic acid (SRM4990) supplied by NIST or equivalent organic substance] is set to 100 pMC. The ratio of the fossil fuel-derived organic substance and the plant-derived organic substance is determined by determining the modern carbon ratio of the sample on the basis of this 0 to 100% pMC. The modern carbon ratio of plant-derived synthetic resins currently produced does not fall below at least 103 pMC due to the influence of ¹⁴ C artificially increased by atmospheric nuclear tests conducted after 1950. The modern carbon ratio in 1963 before the nuclear test stop treaty was 118 pMC. Therefore, if the modern carbon ratio of the synthetic resin is 103 to 118 pMC, it can be said that the plant-derived synthetic resin is surely contained.

  Moreover, from the value of the modern carbon ratio of the known plant-derived synthetic resin, a synthetic resin material (a modern carbon ratio is 0 pMC) that is a mixture of the plant-derived synthetic resin and a fossil fuel-derived synthetic resin ( The content ratio of the plant-derived synthetic resin in the resin composition) can be calculated, and the mass ratio of the plant-derived synthetic resin may be described as “% Corg.renew”. For example, when the mass ratio of the plant-derived synthetic resin (modern carbon ratio: 104 pMC) and the fossil fuel-derived synthetic resin in the resin composition is 50:50, the resin composition is 50% Corg. renew and the modern carbon ratio is 52 pMC (calculated as 104 pMC × 0.50 = 52 pMC). When the mass ratio of the resin composition is 55:45, it is 55% Corg.renew, and the modern carbon ratio is calculated as 57.2 pMC (104 pMC × 0.55 = 57.2 pMC). ). As described above, the modern carbon ratio of the plant-derived synthetic resin does not fall below 103 pMC. Therefore, a synthetic resin material (resin composition) that is a mixture of a certain plant-derived synthetic resin and a synthetic resin derived from fossil fuel. If the modern carbon ratio of the product is 56.7 pMC or more, the modern carbon ratio of the plant-derived synthetic resin is 55 mass% or more (calculated as 56.7 pMC> 103 pMC × 0.55 = 56.65 pMC). You can say that.

  Resin products that use plant-derived synthetic resins and resin products that use synthetic resins derived from fossil fuels, in principle, differ only in the modern carbon ratio. Are considered to have no change or difference in handling. However, in reality, for example, it is also known that there may be a difference in compatibility and mechanical properties (Patent Document 1).

〔cap〕
Caps attached to the opening of the container include those that are removed from the container in order to pour out the contents of the container, and those that can be poured out without being removed from the container.

  As a cap which can pour out the contents of the container without removing it from the container, for example, as shown in FIGS. 8 and 9, a cap body (11) attached to the mouth and neck of the container (b), a cap body An overcap (12) for covering the top of the lid and a lid opening / closing mechanism (13) for connecting the overcap (12) to the cap body (11) so as to be swingable between a closed state and an open state Caps with the following are known. In general, the inner peripheral surface of the cap body (11) is provided with a threaded portion (11a) for screwing with the outer peripheral surface of the mouth and neck portion of the container, and the outer peripheral surface is knurled to prevent slipping ( It is also referred to as “notch processing” (not shown).

  The cap in the closed state shown in FIG. 8 causes the overcap (12) to open as shown in FIG. 9 by swinging the lid opening / closing mechanism (13) with respect to the cap body (11). Thus, a spout (14) for pouring the contents of the container can be formed at the top of the container. Such a cap is widely used as a cap for containers such as liquid seasonings in recent years because it is not necessary to remove the entire cap from the container when the contents of the container are poured out. Or the like can be integrally formed from a synthetic resin material.

  Various mechanisms are known as the lid opening / closing mechanism (13), for example, a three-point hinge mechanism and a membrane hinge mechanism. In the example shown in FIGS. 8 to 10, the hinge body (13 a) that connects the cap body (11) and the overcap (12) to each other so as to be swingable, and the overcap (12) disposed on both sides thereof are closed. A three-point hinge mechanism composed of a pair of elastic pieces (13b) that pulls in a lid state or an open state is employed. In the three-point hinge mechanism, when the overcap (12) is swung from the open state to the closed state, the overcap (12) may be referred to as a predetermined position ("thought point" or "dead point"). ) Until the elastic piece (13b) is gradually extended, and in this process, a resistance is felt to swing the overcap (12). When the overcap (12) exceeds the speculative point, the elastic piece (13b) contracts by its own elastic restoring force, and pulls the overcap (12) in the closed state. Feeling of resistance (click feeling) when the overcap (12) crosses the thought point, when moving from the thought point to the closed state, or when moving from the thought point to the open state (snap property) ) Is determined by the size, elastic modulus, elongation and the like of the elastic piece (13b).

  Further, the film-like hinge mechanism (not shown) has a remarkably large area with respect to the thickness of a thin film, thick film, film, sheet, or the like that connects the cap body and the overcap so as to be swingable. The hinge mechanism includes a film-like body (not shown) as a main part of the hinge mechanism. When the overcap is swung from the open state to the closed state in the membrane hinge, the membrane hinge is gradually extended until the overcap reaches the thought point (dead point). You will feel a moderate resistance to swing the cap. When the overcap exceeds the imaginary point (dead point), the membrane hinge contracts by its own elastic restoring force and pulls the overcap in the direction of the closed state. When the overcap moves from the thought point (dead point) to the closed state, or when the overcap moves from the thought point (dead point) to the closed state. The operating characteristic (snap property) is determined by the elastic coefficient, size, elongation amount, etc. of the membrane hinge.

  That is, the operating characteristics (snap properties) of hinge mechanisms that are commonly used as cap lid opening / closing mechanisms, such as three-point hinge mechanisms and membrane hinge mechanisms, are adjusted by the elastic coefficient, dimensions, and elongation of the members that make up the hinges. can do.

  As a cap lid opening / closing mechanism, a toggle structure having a different operating principle from these hinge mechanisms is known. For example, in Patent Document 2, as shown in FIGS. 11 to 13, two plate-like members (101 ′) and (102 ′) and one plate-like member (101 ′) are elastic to be movable. A connecting arm (119) extending between the member (116) and the other plate-like member (102 ′) and a portion (117) of the elastic member (116) far from the plate-like member (101 ′) And a first flexible portion (120) disposed on both sides of the elastic member (116) and the connecting arm (119) and pivotably coupling the plate-like members (101 ′), (102 ′) to each other, An integrally formed lid opening / closing mechanism including (121) is disclosed, and further, a connection portion (117) between the elastic member (116) and the connection arm (119) is formed as a plate-like member (101 ′), (102 ′). ) To each other so as to be pivotable. 20) and (121) are offset (displaced), so that the turning force of the plate-like members (101 ′) and (102 ′) from the position shown in FIG. 12 to the state shown in FIG. It is disclosed that the restoring force to the state position of FIG. 12 is created.

  That is, as shown in FIGS. 12 and 13, the connecting portion (117) between the elastic member (116) and the connecting arm (119) is a flexible portion that can turn the plate-like members (101 ′), (102 ′). With respect to (120) and (121), they are offset (deviation) by x in the horizontal direction and y in the vertical direction. When there is an offset (deviation) of the bent portion or the turning portion, when the plate-like member (102 ′) is turned clockwise from the state of FIG. 12, a resistance force (up to a certain turning point) ( However, after passing the turning point, the plate-like member (102 ′) receives a tensile force to the state shown in FIG. Conversely, when the plate-like member (102 ′) is turned counterclockwise from the state of FIG. 13, it receives a resistance force (reaction force) up to the turning point. (102 ′) receives a tensile force to the state of FIG. By changing the shape of the elastic member (116) and the connecting arm (119) and adjusting the values of the offsets (deviations) x and y, the resistance force (reaction force) and the tensile force can be adjusted. .

  In this way, by changing the shape of the component member, by providing the offset (deviation) of the bent portion or the turning portion, a reaction force works to a certain point with respect to the input, and when the point is exceeded, the reaction force is exceeded. Since this action is the same as the action of a so-called toggle switch, this mechanism is called a toggle structure, and the lid opening / closing mechanism of the toggle structure is disclosed in Patent Literature. 3 and 4 are also described. The toggle structure lid opening / closing mechanism may be simply referred to as a hinge mechanism.

A cap having a toggle structure lid opening / closing mechanism includes, for example, a cap body (1), as shown in a perspective view of FIGS. 1 and 2, a cross-sectional view of FIGS. 3 and 4, and a plan view of an opened state of FIG. An overcap (2) that covers the top of the cap body (1), and a toggle that connects the overcap (2) to the cap body (1) so as to be swingable between a closed state and an open state. The structure (3) is provided. As shown in FIGS. 3 and 4, the toggle structure (3) includes a bendable coupling piece (3a) that rotatably supports the overcap (2) with respect to the cap body (1), and an overcap (2 ) And a pair of support members (3b) disposed on both sides of the coupling piece (3a). The coupling piece (3a) includes both end portions (3a ₁ , 3a ₂ ), and the end portion (3a ₁ ) extends to the top plate portion (2a) of the overcap (2) and the end portion (3a _2). ) Are coupled to the outer peripheral surface of the cap body (1). In this example, the shape of the connecting portion between the both end portions (3a ₁ , 3a ₂ ) and the outer peripheral surface of the cap body (1) and the top plate portion (2a) of the overcap (2) is as shown in FIG. Both are substantially linear. Further, the joining piece (3a) is the top plate portion of the end portion connecting with the inside of the peripheral edge of the top plate portion of the overcap (2) (2a) (3a ₁₎ in only overcap (2) ( 2a). Therefore, the coupling piece (3a) is attached to the top plate portion (2a) of the overcap (2) so that the coupling piece (3a) can swing around both ends (3a ₁ , 3a ₂ ). A notch (slit) extending in the peripheral direction with a width substantially equal to the width of 3a) is provided. In addition, the notch part (slit) provided in the top plate part (2a) of the overcap (2) is provided in the three-point hinge mechanism or the membrane hinge mechanism in which the coupling piece (3a) does not swing. It is not necessary.

As a result of the coupling piece (3a) in the toggle structure (3) having the shape as described above, as shown in the cross-sectional view of the cap having the toggle structure in an opened state with an elevation angle of 180 ° shown in FIG. The end (3a ₁ ), which is the connection point between the coupling piece (3a) and the top plate (2a), is the center point of the support member (3b) provided along the rotation axis of the overcap (2). On the other hand, it is offset (deviation) by h in the horizontal direction and v in the vertical direction.

In the cap having a toggle structure, when the overcap (2) is swung from the open state shown in FIG. 2 or 4 to the closed state shown in FIG. 1 or FIG. 3a ₁ ) is offset (deviation) by h in the horizontal direction and v in the vertical direction with respect to the center point of the support member (3b), so that the overcap (2) is counterclockwise in the figure. When it is turned, it receives a resistance force (reaction force) up to the turning point (thought point), but when the turning point (thought point) is passed, the overcap (2) closes the cap body (1). It will receive a tensile force to the state. On the other hand, when the overcap (2) is swung from the closed state to the open state, if the overcap (2) is turned clockwise in the figure, a resistance force (reverse) However, when the turning point (thought point) is passed, the overcap (2) receives a tensile force to the open state. By changing the shape of the coupling piece (3a) and changing the offset (deviation) (h) and / or (v), the overcap (2) is swung between the closed state and the opened state. The resistance force (reaction force) and tensile force when moving can be adjusted. For example, in order to increase the horizontal offset (displacement) (h), the coupling piece (3a) is connected to the top plate portion (2a) of the overcap (2) and the end ( the position of the 3a _1), the top plate portion in (2a), may be changed to a more inward location of the periphery. In this case, the notch part (slit) provided in the top plate part (2a) of the overcap (2) is provided up to the inner position of the periphery.

  As a cap having a toggle structure, various types of caps are assumed. For example, the contour shape of the coupling piece (3a) may have a curved contour shape in addition to the illustrated substantially L-shaped contour shape. Moreover, you may have two or more coupling pieces (3a).

  A cap having a toggle structure integrally formed from a synthetic resin material is formed by injection molding or other known synthetic resin molding methods. Usually, it is often formed by injection molding, and at that time, mainly for the reasons of molding processing, the overcap (2) as shown in FIG. That is, injection molding is performed using a molding die having a cap shape with a 180 ° open state, the cap is molded, and then the molded cap is taken out of the mold, and then the molded product is cured. However, it is often stored in a closed state in order to save storage space.

  When using a cap integrally molded from synthetic resin with a toggle structure (3), open the overcap (2) from the closed state to pour out the contents of the container fitted with the cap. After the contents are poured out, an operation of swinging the overcap (2) from the open state to the closed state is performed. The opening angle when the overcap (2) is swung from the closed state to the open state and the overcap (2) is in the stable open state, that is, the elevation angle in the open state, is a synthetic resin. As shown in FIG. 4, the angle is usually smaller than 180 °, and the support member (3b) is slightly bent. Further, when the swinging operation between the open state and the closed state is repeated for a long period of time, the elevation angle of the open state of the overcap (2) may become smaller.

  If the elevation angle of the open state of the overcap (2) is 180 °, the resistance force when starting swinging in order to make the overcap (2) closed will increase. The elevation angle need not be 180 °. However, if the elevation angle in the opened state becomes too small, the offset (deviation) h and v in the opened state become smaller, resulting in less sharpness in opening and closing of the overcap (2), and overcap (2 ) Cannot be reliably closed, and on the contrary, it is difficult to maintain a stable open state, and from the spout (4) standing at the mouth of the cap body (1). The content that comes out is accidentally poured out to the lid opening / closing mechanism side, which may undesirably contaminate the overcap (2). In view of this, there has been a demand for a cap integrally molded from synthetic resin that can maintain the overcap in a stable open state and has a sufficiently large elevation angle in the open state.

  On the other hand, a cap integrally formed from a synthetic resin material having a toggle structure as a lid opening / closing mechanism is a container filled with contents (hereinafter referred to as a “filling container”) in the same manner as a lid or cap having another lid opening / closing mechanism. In the manufacturing process of), after filling the container with the contents, it is attached to the mouth and neck of the container. As an apparatus for attaching a cap to a container, for example, an apparatus as shown in FIG. 14 is known (Patent Document 5). In this apparatus, caps (c) sequentially fed from a cap supply unit (hereinafter sometimes referred to as “hopper”) not shown are aligned by cap supply means (d) such as an inclined chute. The caps (c) are transferred to the capper (e) one by one through the cap support device (D) that is a transfer device. The capper (e) grips the cap (c) with the gripper (f), moves to above the filling container (b), and then moves the cap (c) gripped by the gripper (f) to the filling container (b). The cap (c) is fitted or screwed to the mouth and neck while being brought into contact with the mouth and neck. Next, usually, the cap (c) held by the gripper (f) is rotated, so that the cap (c) is screwed into the mouth-neck portion of the filling container (b) and attached to the mouth-neck portion, and the gripper (f ) Is released from the cap (c), and the filled container (b) to which the cap (c) is attached is manufactured. As the cap supply means (d), in addition to the inclined one shown in the figure, one that supplies the cap (c) almost vertically, one that supplies the cap (c) by rotating the sprocket or gear, Various devices are known, such as those that transport c) in parallel and those that transport caps (c) stacked one above the other, and have various diameters, shapes, or lengths, such as chutes. Are known.

  In recent years, in order to improve productivity, the speed of manufacturing apparatuses for filling containers has been increased, and the apparatus for attaching the cap (c) to the containers is also required to increase the operation speed. Accordingly, in the cap supply means (d), the cap (c) is required to be transferred while being aligned quickly and reliably.

  In the cap supply means (d), the cap (c) including the cap body, the overcap, and the toggle structure is normally supplied and transferred in a closed state. The cap (c) is provided with a toggle structure (3) for slidably connecting the cap body (1) and the overcap (2) in addition to the cap body (1) and the overcap (2). The cap (c) has a protrusion or protrusion. In the cap supply means (d), the cap (c) may contact or get caught on the inner surface of the cap supply means (d), and the toggle structure (3) of the plurality of caps may interfere with each other. In some cases, it is difficult to perform quick and reliable alignment and transfer.

  As a result of the difficulty of quick and reliable alignment and slip transfer of the cap, the posture and position of the cap (c) delivered to the capper (e) are out of a predetermined range, or in some cases, in the cap supply means (d). Since the cap is clogged or the supply of the cap (c) to the capper (e) is delayed, the manufacturing apparatus for the filling container (b) may be stopped. There is also a need for a solution with a good transportability.

  On the other hand, in a synthetic resin material container such as polyolefin, a lubricant (slip agent) is added to a raw material resin such as polyolefin in order to improve the slipperiness of the inner and outer surfaces of the container (Patent Document 6). ). The lubricant is usually added to a raw material resin by a master batch method or kneaded. When the synthetic resin material container is a multilayer container, a lubricant is often added to the surface layer (outermost layer or innermost layer). As the lubricant, for example, fatty acid amide is widely used, and specifically, oleic acid amide, stearic acid amide, behenic acid amide (behenic acid amide) and the like are used. These lubricants have been used in a mixture of two or more.

JP 2011-132525 A US Pat. No. 3,289,877 Japanese Utility Model Publication No. 2-69857 JP 2007-261660 A JP-A-8-119386 Japanese Patent Laid-Open No. 6-72422

  An object of the present invention is to provide a carbon offset property, and has a moldability comparable to a cap having a toggle structure integrally formed from a synthetic resin material containing a synthetic resin derived from fossil fuel, and stabilizes an overcap. The lid can be maintained in the opened state, the elevation angle in the opened state is sufficiently large, and the snapping, durability and operability are good. An object of the present invention is to provide a cap having a toggle structure integrally formed from a synthetic resin material containing a plant-derived polyolefin.

  As a result of earnest research on solving the above problems, the inventors of the present invention have a cap having a toggle structure formed integrally from a synthetic resin material, and the thickness of the coupling piece of the toggle structure is specified, and The present invention has been completed by finding that the problem can be solved by using a cap having a specific composition of the synthetic resin material forming the toggle structure.

That is, according to the present invention, the cap main body attached to the mouth and neck of the container, the overcap covering the top of the cap main body, and the overcap between the closed state and the open state with respect to the cap main body. Molded integrally from a synthetic resin material containing a plant-derived polyolefin, including a polyolefin structure having a toggle structure that is swingably connected, and a polyolefin having a modern carbon ratio of 56.7 to 118 pMC as defined in ASTM D6866-11 Caps, a) to c) below:
a) The toggle structure has a bendable coupling piece that rotatably supports the overcap with respect to the cap body, and a pair of support members disposed on both sides of the coupling piece along the rotation axis of the overcap. ;
b) The coupling piece is
b-1) It is provided with both ends, and the both ends are connected to the outer peripheral surface of the cap body and the top plate of the overcap,
b-2) Only at the end connected to the inside of the periphery of the top plate of the overcap, the top plate of the overcap is connected.
b-3) In the vicinity of the end portion connected to the top plate portion of the overcap, there is a region where the cross-sectional thickness is thinner than other regions,
And,
b-4) In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion connected to the top plate portion of the overcap, the surface on the side continuous with the outer surface of the top plate portion of the overcap has a recess; and
c) The toggle structure is made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond;
There is provided a cap having a toggle structure containing a plant-derived polyolefin. In the present invention, “molded integrally from a synthetic resin material” is usually used for molding a synthetic resin in addition to a plant-derived polyolefin alone or a plant-derived polyolefin and a fossil fuel-derived polyolefin. This means that it is integrally molded from a synthetic resin material (hereinafter sometimes referred to as “resin material” or “resin composition”) containing additives, compounding agents, and the like.

Moreover, according to this invention, a cap provided with the toggle structure of the following (1)-(15) is provided as an embodiment.
(1) A toggle containing the plant-derived polyolefin, wherein the cap body, the overcap and the toggle structure are made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond Cap with structure.
(2) The fatty acid amide (A) having an unsaturated cis structure carbon double bond is converted into the following (A ₁ ), (A ₂ ) and (A ₃ ):
(A ₁ ) H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ —) _n —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10);
(A ₂ ) H ₂ N—CO — (— CH ₂ —) _m−2 —CH═CH — (— CH ₂ —) _m —CH ₃ (where m is an integer in the range of 6 ≦ m ≦ 10) And (A ₃ ) H ₂ N—CO — (— CH ₂ —) _{k + 4} —CH═CH — (— CH ₂ —) _k —CH ₃ (where k is an integer in the range of 6 ≦ k ≦ 10); ;
The cap provided with the toggle structure containing the said plant-derived polyolefin containing the at least 1 sort (s) of fatty acid amide represented by one formula chosen from the group which consists of these.
(3) The fatty acid amide (A) having an unsaturated cis-structured carbon double bond is a fatty acid amide represented by the above formula (A ₁ ) and the above formula (A ₂ ) or (A ₃ ) A cap comprising a toggle structure, comprising the plant-derived polyolefin being a mixture with at least one fatty amide represented.
(4) A cap having a toggle structure, wherein m in the fatty acid amide represented by the formula of (A ₂ ) contains the plant-derived polyolefin in which m = n + 1 or m = n−1.
(5) A cap having a toggle structure, wherein the fatty acid amide represented by the formula (A ₃ ) contains a plant-derived polyolefin in which k is k = n.
(6) The fatty acid amide (A) having an unsaturated cis-structured carbon double bond is represented by the above formula (A ₁ ) and the following (A ₁₁ ):
(A ₁₁ ) H ₂ N—CO — (— CH ₂ —) _j —CH═CH — (— CH ₂ —) _j —CH ₃ (where j is an integer in the range of 6 ≦ j ≦ 10, j ≠ n.);
A cap having a toggle structure containing the plant-derived polyolefin, which is a mixture with a fatty acid amide represented by the formula:
(7) The above plant-derived polyolefin, wherein the fatty acid amide (A) having an unsaturated cis structure carbon double bond contains a compound having 2 to 4 bonds of unsaturated cis structure carbon double bonds in the molecular structure. Containing a toggle structure.
(8) A cap having a toggle structure, wherein the synthetic resin material containing the fatty acid amide (A) having an unsaturated cis structure carbon double bond further contains the plant-derived polyolefin containing the saturated fatty acid amide.
(9) A cap having a toggle structure, wherein the plant-derived polyolefin contains the plant-derived polyolefin, which is a plant-derived ethylene resin.
(10) A cap having a toggle structure, wherein the binding piece contains the plant-derived polyolefin having a substantially L-shaped contour shape.
(11) A cap provided with a toggle structure, wherein the binding piece contains the plant-derived polyolefin having a curved contour shape.
(12) A cap having a toggle structure, wherein the concave portion contains the plant-derived polyolefin which is a linear groove.
(13) The plant-derived polyolefin containing the linear groove is a groove having a depth in the range of 5 to 30% with respect to the cross-sectional thickness of the region having a thinner cross-sectional thickness than the other region. A cap with a toggle structure.
(14) A cap having a toggle structure, wherein the toggle structure contains the plant-derived polyolefin having two or more binding pieces.
(15) A cap having a toggle structure containing the plant-derived polyolefin heat-fixed in a closed state.

According to the present invention, the cap body attached to the mouth and neck of the container, the overcap covering the top of the cap body, and the overcap swinging between the closed state and the opened state with respect to the cap body Cap formed of a synthetic resin material containing a plant-derived polyolefin, including a polyolefin having a toggle structure that can be connected and a polyolefin having a modern carbon ratio of 56.7 to 118 pMC as defined in ASTM_D6866-11 And the following a) to c):
a) The toggle structure has a bendable coupling piece that rotatably supports the overcap with respect to the cap body, and a pair of support members disposed on both sides of the coupling piece along the rotation axis of the overcap. ;
b) The coupling piece is
b-1) It is provided with both ends, and the both ends are connected to the outer peripheral surface of the cap body and the top plate of the overcap,
b-2) Only at the end connected to the inside of the periphery of the top plate of the overcap, the top plate of the overcap is connected.
b-3) In the vicinity of the end portion connected to the top plate portion of the overcap, there is a region where the cross-sectional thickness is thinner than other regions,
And,
b-4) In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion connected to the top plate portion of the overcap, the surface on the side continuous with the outer surface of the top plate portion of the overcap has a recess; and
c) The toggle structure is made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond;
A toggle comprising a plant-derived polyolefin and having a toggle structure, and having a carbon offset property and integrally formed from a synthetic resin material containing a synthetic resin derived from fossil fuel. It has a moldability comparable to the cap with the structure, can maintain the overcap in a stable open state, has a sufficiently large elevation angle in the open state, and has good snapping, durability and operability. And in the attachment process of the cap to a container, there exists an effect that the cap provided with the toggle structure containing the polyolefin derived from a plant with the favorable transportability in cap supply can be provided.

It is a perspective view in the closed state of a cap provided with a toggle structure. It is a perspective view in the open state of a cap provided with a toggle structure. It is sectional drawing when a cap provided with the toggle structure of a closed state is mounted | worn with the container. It is sectional drawing when a cap provided with the toggle structure of a cover-opening state is mounted | worn with the container. It is a top view in the open state of a cap provided with a toggle structure. It is sectional drawing of a cap provided with the toggle structure integrally shape | molded by the injection molding in the open state of 180 degree of elevations by injection molding. It is an expanded sectional view of a coupling piece in the vicinity of the end which connects a coupling piece with the top plate part of an overcap. It is sectional drawing when the cap provided with the three-point hinge mechanism of the closed state which is a prior art example is mounted | worn with the container. It is sectional drawing when the cap provided with the three-point hinge mechanism of the open lid | cover state which is a prior art example is mounted | worn with the container. It is a top view of a cap provided with the three-point hinge mechanism which is a prior art example. It is a top view which shows the prior art example of the lid | cover opening / closing mechanism provided with a toggle structure. It is sectional drawing in line | wire 105-105 in the cover open state of the cover opening / closing mechanism provided with the toggle structure of a prior art example. It is sectional drawing in line 105-105 in the closed state of the lid | cover opening / closing mechanism provided with the toggle structure of a prior art example. It is a figure which shows an example of a cap mounting apparatus.

I. Cap with Toggle Structure A cap with a toggle structure containing the plant-derived polyolefin of the present invention includes a cap body (1) attached to the mouth and neck of the container, and an overcap (2) covering the top of the cap body (1). And a plant-derived polyolefin comprising a toggle structure (3) for connecting the overcap (2) to the cap body (1) so as to be swingable between a closed state and an open state. It is a cap provided with a toggle structure formed integrally from a synthetic resin material. In describing the present invention with reference to (FIGS. 1 to 7), the same numbers and symbols in the drawings as those used in the description of the prior art are used. In the drawings, the scale and shape may be emphasized or omitted to understand the present invention.

1. Cap body The cap body (1) attached to the mouth and neck of the container is a cup-like member that is directly attached to the mouth and neck of the container by fitting or screwing. As shown in FIGS. 3, 4, and 6, the cap body (1) generally has a substantially cylindrical portion surrounding the mouth-neck portion of the container, and a top plate portion that comes into contact with the distal end surface (upper end) of the mouth-neck portion of the container. You may have further. An opening is formed at the center of the top plate portion of the cap body (1), and this opening forms a spout (4) for pouring the contents of the container. A substantially cylindrical member may protrude from the top plate portion of the cap body (1) so as to surround the spout (4), thereby facilitating pouring the contents of the container. In addition, from the viewpoint of preventing the contents of the container from being spoiled, an oxygen gas barrier single layer or multilayer sheet or film (not shown) is provided on the inner surface of the top plate portion that is in contact with the contents of the container as necessary. May be provided. A screw part (1a) is provided on the inner peripheral surface of the cap body (1) to be screwed with the outer peripheral surface of the mouth neck of the container, and the outer peripheral surface is subjected to knurling (notching) to prevent slipping. Also good.

  Although the size of the cap body (1) in the cap having a toggle structure containing the plant-derived polyolefin of the present invention is not particularly limited, the generally cylindrical portion surrounding the mouth-and-neck portion has a diameter (outer diameter and inner diameter). ) The size of the cap body (1) is about 200 μm to 4 mm [not including the height of the screw portion (1a)]. ]. The size and thickness of the overcap (2) and the toggle structure (3) can be determined according to the size of the cap body (1).

2. Overcap The overcap (2) that covers the top of the cap body (1) covers the top plate of the cap body (1) and closes the spout (4), and has a toggle structure (3) Is attached to the cap body (1) so as to be swingable. As shown in FIGS. 2 to 4, the inner surface of the overcap (2) (the surface on the cap body (1) side in the closed state shown in FIG. 3) has a top plate portion of the cap body (1) when the lid is closed. A cylindrical member that is fitted into the opening formed in the container and prevents the contents of the container from leaking from the spout (4) may be provided. Further, if desired, a locking means may be provided to keep the overcap (2) closed. The shape of the locking means is not particularly limited. For example, as shown in the figure, the step provided on the upper portion of the cap body (1) and the inner peripheral surface of the overcap (2) use elastic deformation. In addition, a locking ring may be provided on the outer peripheral portion of the top plate portion of the cap body (1), and the inner peripheral surface of the overcap (2) may use elastic deformation. You may make it become a stop relationship.

On the top plate part (2a) of the overcap (2), as will be described later, the coupling piece (3a) of the toggle structure (3) can swing around both ends (3a ₁ , 3a ₂ ) as bending points. As possible, a notch (slit) extending in the peripheral direction with a width substantially equal to the width of the coupling piece (3a) is provided.

3. Toggle structure The cap having a toggle structure containing the plant-derived polyolefin of the present invention is connected to the cap body (1) so that the overcap (2) can swing between the closed state and the open state. The toggle structure (3) is provided. The toggle structure (3) itself has been known to be used as a lid opening / closing mechanism before the present application, and is a bend that rotatably supports the overcap (2) with respect to the cap body (1). It has a possible coupling piece (3a) and a pair of support members (3b) arranged on both sides of the coupling piece (3a) along the rotation axis of the overcap (2).

4). Binding piece The binding piece (3a) of the toggle structure (3) in the present invention is:
With both ends _(3a 1, 3a _2), the both end portions _(3a 1, 3a ₂₎ are each coupled to the outer peripheral surface and the top plate portion of the overcap (2) of the cap body (1) (2a),
Only at the end (3a ₁ ) that is connected to the inside of the periphery of the top plate portion (2a) of the overcap (2), it is connected to the top plate portion (2a) of the overcap (2),
In the vicinity of the end portion (3a ₁ ) connected to the top plate portion (2a) of the overcap (2), there is a region where the cross-sectional thickness is thinner than other regions, and
In regions sectional thickness thinner than other regions in the vicinity of the top plate end portion connected to (2a) (3a ₁₎ of the overcap (2), the outer surface of the top plate portion of the overcap (2) (2a) A recess (3a ₁₁ ) is provided on the surface on the side continuous with.

Connection piece (3a) is at both ends, i.e. with two ends _(3a 1, 3a _2), extends between the both ends _(3a 1, 3a _2), a bendable, overcap (2) is supported rotatably. Both end portions (3a ₁ , 3a ₂ ) are connected to the outer peripheral surface of the cap body (1) and the top plate portion (2a) of the overcap (2), respectively. In the illustrated example, the end (3a ₁ ) of the coupling piece (3a) is connected to the top plate (2a) of the overcap (2), and the end (3a ₁ ) It is offset (deviation) by h in the horizontal direction and v in the vertical direction with respect to the center point of the pair of support members (3b) on both sides of the coupling piece (3a) along the rotation axis of the overcap (2). ing. The other end (3a ₂ ) of the coupling piece (3a) is connected to the outer peripheral surface of the cap body (1). In this specific example, the shapes of the connecting portions between both end portions (3a ₁ , 3a ₂ ) and the outer peripheral surface of the cap body (1) and the top plate portion (2a) of the overcap (2) are both substantially linear. The length of the connecting portion is the same as the width of the coupling piece (3a).

[Bonded piece width]
The width of the binding piece (3a) is usually 0.1 to 0.5, preferably 0.15 to 0.4, more preferably 0.2 to 0.35 with respect to the diameter of the overcap (2). It can be determined within a range of ratios. If the width of the coupling piece (3a) is too small, the overcap (2) will be twisted, the lid will not close properly, the contents may spill out, or the cap with the toggle structure (3) Durability may decrease. If the width of the coupling piece (3a) is too large, the resistance force when starting swinging to open and close the overcap (2) and the tensile force after passing the turning point (thought point) will increase and snap. Sexuality and click feeling may worsen. The toggle structure (3) can also have two or more coupling pieces (3a). In this case, if the total width of the two or more coupling pieces (3a) falls within the above range, Good.

[Thickness of bonding piece]
The thickness of the coupling piece (3a) is not particularly limited as long as the overcap (2) can be pivotably connected between the closed state and the open state with respect to the cap body (1). , Resistance force when starting swinging to open and close the overcap (2) mentioned above, tensile force after passing the turning point (thought point), strength of the connecting piece (3a), molding From the viewpoint of processing, etc., the ratio is usually 0.1 to 2, preferably 0.15 to 1.5, more preferably 0.2 to the thickness of the top plate portion (2a) of the overcap (2). What is necessary is just to determine so that it may become a ratio of -1.2. From the viewpoint of cap handling and molding process, the portion occupying most of the coupling piece (3a), that is, the thickness of the main part of the coupling piece (3a) is the top plate part (2a) of the overcap (2). The thickness is preferably about 0.8 to 1.1, particularly preferably about 0.9 to 1.05. The main part of the coupling piece (3a) is a region extending between both end parts (3a ₁ , 3a ₂ ) of the coupling piece (3a), and as will be described in detail later, both end parts (3a ₁ , 3a ₂ ), in the vicinity of the end connected to the top plate portion (2a) of the overcap (2), a region having a thinner cross-sectional thickness than other regions, and the top plate portion of the overcap (2) ( 2a) In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end connected to 2a), other than the concave portion (3a ₁₁ ) on the surface of the overcap (2) on the side continuous with the outer surface of the top plate portion (2a) Means an area.

[Area with a thinner cross-sectional thickness than other areas]
The thickness of the coupling piece (3a) may be partially different. In particular, the connecting piece (3a), which will be described in detail later, has a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end (3a ₁ ) connected to the top plate (2a) of the overcap (2). Thus, the swinging of the overcap (2) with respect to the cap body (1) between the closed state and the open state can be further facilitated. In the vicinity of the end portion (3a ₁ ) connected to the top plate portion (2a) of the overcap (2), the thickness of the coupling piece (3a) in the region where the cross-sectional thickness is thinner than other regions is that of the coupling piece (3a). The thickness of the main portion (corresponding to “other region”) is usually 30 to 95%, preferably 40 to 90%, more preferably 50 to 85%. In the vicinity of the end (3a ₁ ) connected to the top plate (2a) of the overcap (2), if the thickness of the coupling piece (3a) in the region where the cross-sectional thickness is thinner than other regions is too small, the end The strength of (3a ₁ ) may be insufficient, and the durability of the cap may be reduced. On the other hand, if the thickness of the coupling piece (3a) in the region where the cross-sectional thickness is thinner than the other region is too large, the overcap (2) swings between the closed state and the opened state of the overcap (2) with respect to the cap body (1). It may be difficult to move.

In addition, the connecting piece (3a) of the toggle structure (3) in the present invention has an overcap only at the end (3a ₁ ) connected to the inside of the periphery of the top plate (2a) of the overcap (2). It connects with the top plate part (2a) of (2). That is, portions other than the end portion (3a ₁ ) of the coupling piece (3a) are not connected to the top plate portion (2a) of the overcap (2). As described above, the top plate portion (2a) of the overcap (2) is provided with a notch (slit) extending in the peripheral direction with a width substantially equal to the width of the coupling piece (3a). The coupling piece (3a) can be bent in the space formed by the notch (slit) without interfering with the notch (slit) with the end (3a ₁ ) as a fulcrum, Along with this, the overcap (2) can swing between the closed state and the open state.

[Outline shape of connecting piece]
The coupling piece (3a) of the toggle structure (3) according to the present invention extends between both end portions (3a ₁ , 3a ₂ ) and can be bent, in particular, both end portions (3a ₁ , 3a ₂ ). There is no limitation on the contour shape extending between the two, and a coupling piece having a substantially L-shaped contour shape as shown in the drawing, a coupling piece having a curved contour shape, or the like can be used. By adjusting the position of the bent portion in the substantially L-shaped contour shape and the position of the portion having the smallest curvature radius in the curved contour shape, the elevation angle in the open state of the overcap (2), snapping property and operability May be further adjusted to some extent.

[Concave portion on the surface on the side continuous with the outer surface of the top plate portion of the overcap]
Furthermore, the coupling piece (3a) of the toggle structure (3) according to the present invention has a cross-sectional thickness that is greater than that of other regions in the vicinity of the end (3a ₁ ) connected to the top plate (2a) of the overcap (2). in thin region, by having a recess (3a ₁₁₎ on the surface of the side continuous to the outer surface of the top plate portion of the overcap (2) (2a), to maintain the overcap (2) in a stable open lid state The elevation angle in the opened state is sufficiently large, and the snapping property, durability, and operability can be good. The elevation angle in the open state where the snapping property, durability and operability are good is preferably 150 to 180 °, more preferably 152 to 177 °, and still more preferably 155 to 175 °. The outer surface of the top plate portion (2a) of the overcap (2) means the upper surface of the top plate portion (2a) of the overcap (2) in the closed cap shown in FIG. In the cap in the opened state shown in FIG. 4 or FIG. 6, it means the lower surface of the top plate portion (2a) of the overcap (2).

In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion (3a ₁ ), the recess (3a ₁₁ ) on the surface on the side continuous with the outer surface of the top plate portion (2a) of the overcap (2) is The shape is not particularly limited, and may be a dent, a dent, a groove, or other shapes. The recesses (3a ₁₁ ) having the shape of the recess, the recess, the groove, or the like may be arranged discretely in a region where the cross-sectional thickness is thinner than the other region in the vicinity of the end (3a ₁ ). The size and number can be determined as appropriate, but are preferably linear, more preferably linear, as in the cross-sectional view of the coupling piece (3a) in the vicinity of the end (3a ₁ ) shown in FIG. The surface of the overcap (2) including the rotation axis may be arranged in a straight line extending substantially parallel to the rotation axis. Most preferably, the recess (3a ₁₁ ) is a linear groove. The cross-sectional shape of the recess (3a ₁₁ ), particularly preferably a straight groove, is not particularly limited, and is arc-shaped, semi-circular, V-shaped, U-shaped, trapezoidal, triangular, square, Various cross-sectional shapes, such as the removed shape, can be employed. Further, a part or all of the arc, or a part or all of the side such as a V shape, a trapezoid, or a triangle can be formed into a bowl shape, or small irregularities can be formed. It may be provided.

The depth of the concave portion (3a ₁₁ ) is set to the cross-sectional thickness of a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion (3a ₁ ) connected to the top plate portion (2a) of the overcap (2). On the other hand, it is usually 5 to 30%, preferably 10 to 25%, more preferably 15 to 20%. If the depth of the recess (3a ₁₁ ) is too small, the overcap (2) cannot be maintained in a stable open state, the elevation angle in the open state becomes small, snapping, durability and operation. It may not be good. On the other hand, if the depth of the recess (3a ₁₁ ) is too large, the cross-sectional thickness is thinner than other regions in the vicinity of the end (3a ₁ ) connected to the top plate (2a) of the overcap (2). Insufficient strength, the durability of the cap is reduced, or the lid cannot be maintained in a stable open state. In some cases, the elevation angle in the open state exceeds 180 °, and the overcap (2) The resistance force when swinging to return to the closed state may increase. Therefore, as described above, the linear groove that is most preferable as the recess (3a ₁₁ ) has a ratio of 5 to 30% with respect to the cross-sectional thickness of the region where the cross-sectional thickness is thinner than the other regions. A groove having a range of depth is preferred.

[The other end of the coupling piece]
The other end (3a ₂ ) of the coupling piece (3a) connected to the outer peripheral surface of the cap body (1) closes and opens the overcap (2) with respect to the cap body (1). As long as it can be bent so as not to prevent the rocking when rocking between states, the cross-sectional thickness is smaller in the vicinity of the end (3a ₂ ) than the thickness of the main part of the coupling piece (3a). It is not always necessary to have a region, but by having a region with a thin cross-sectional thickness, the elevation angle, snapping property, and operability of the overcap (2) in the opened state may be further adjusted to some extent.

5. Support Member The support member (3b) included in the toggle structure (3) in the present invention is a pair of support members (3b) disposed on both sides of the coupling piece (3a) along the rotation axis of the overcap (2). . The support member (3b) can swing the overcap (2) between the closed state and the open state with respect to the cap body (1), and the coupling member (3a) The shape, size, and thickness are not particularly limited as long as they do not hinder bending, and may extend from the cap body (1) and / or the overcap (2) as a part of each.

II. Cap provided with a toggle structure integrally formed from a synthetic resin material containing a plant-derived polyolefin The cap provided with a toggle structure containing the plant-derived polyolefin of the present invention includes a cap body (1) and an overcap (2). And a toggle structure (3) for connecting the overcap (2) to the cap body (1) so as to be swingable between a closed state and an open state, as defined in ASTM D6866-11. A cap formed integrally from a synthetic resin material containing a plant-derived polyolefin, including a polyolefin having a modern carbon ratio of 56.7 to 118 pMC. As described above, “molded integrally from synthetic resin material” means that it is integrally molded from synthetic resin material containing additives and compounding agents normally used in molding synthetic resin in addition to polyolefin. It means that it was molded.

  The composition of the synthetic resin material containing the plant-derived polyolefin forming the cap body (1), the overcap (2), and the toggle structure (3) may be the same or different. From the viewpoint of handleability and the like, the same composition is preferable. In addition, the composition of the synthetic resin material may be the same or uniform for each of the cap body (1), the overcap (2), and / or the toggle structure (3). It may be of uniform composition. A so-called gradient material in which the composition of the resin continuously changes may be used. The cap body (1), the overcap (2), or the toggle structure (3) may be a single layer or may be laminated by an in-mold label forming method or the like.

1. Synthetic resin material containing plant-derived polyolefin The cap having a toggle structure containing the plant-derived polyolefin of the present invention includes a polyolefin having a modern carbon ratio defined by ASTM D6866-11 of 56.7 to 118 pMC. These are integrally molded from a synthetic resin material containing a plant-derived polyolefin.

  In general, synthetic resins derived from plants are roughly divided into two. First, polylactic acid, which is a biodegradable resin obtained from lactic acid derived from corn, nylon 610 obtained by using sebacic acid derived from castor oil, polyurethane, and glucose obtained by degrading with basic solution Using as a starting material a plant-derived compound that is difficult to synthesize artificially using conventional petrochemistry, such as polytrimethylene terephthalate obtained using 1,3-propanediol derived from The resulting synthetic resin. Second, a compound that can be artificially synthesized using a manufacturing plant that uses a conventional resin synthesis process, for example, an alkene through a dehydration reaction of an alcohol derived from a fossil fuel, a raw material that is a plant-derived compound, For example, it is a synthetic resin obtained using a starting material that is replaced with an alkene through a dehydration reaction of a plant-derived alcohol. For example, plant-derived ethylene or propylene is produced through an alcohol dehydration reaction using ethyl alcohol obtained from a fermented sugar or a cellulose fermented product extracted from a plant raw material such as sugarcane or corn, and the plant-derived ethylene It is a synthetic resin such as polyethylene and polypropylene obtained using propylene and propylene as a starting material, and is a synthetic resin having no biodegradability. The latter is preferable as a measure against global warming because it converts a carbon-negative synthetic resin derived from fossil fuel into a plant-derived carbon neutral or synthetic resin that contributes to carbon offset.

  The cap having a toggle structure containing the plant-derived polyolefin of the present invention is, as a plant-derived synthetic resin, easy to obtain, moldability, mechanical properties, and viewpoints of properties required for the cap having a toggle structure. From the viewpoint of contribution to carbon offset, plant-derived polyolefins such as plant-derived ethylene resins and plant-derived propylene resins, preferably plant-derived ethylene resins are used.

[Plant-derived polyolefin]
The plant-derived polyolefin that can be contained in the cap having the toggle structure of the present invention is a homopolymer or copolymer of an olefin-based monomer of a plant-derived alkene such as plant-derived ethylene, propylene, butene, or pentene. is there.

[Plant-derived ethylene resin]
The plant-derived ethylene-based resin is a plant-derived ethylene homopolymer or a plant-derived ethylene copolymer mainly composed of plant-derived ethylene, and the copolymer is a plant-derived ethylene. And other plant-derived alkenes and / or other plant-derived unsaturated monomers. Preferred plant-derived ethylene-based resins include plant-derived high-density polyethylene and plant-derived low-density polyethylene.

Plant-derived high-density polyethylene is generally plant-derived polyethylene having a density of 0.942 g / cm ³ or more. Usually, it is polyethylene derived from a plant having a density of 0.980 g / cm ³ or less, preferably 0.945 to 0.970 g / cm ³ , more preferably 0.948 to 0.965 g / cm ³ . The density of the plant-derived polyethylene is measured in accordance with JIS K6922-2. The plant-derived high-density polyethylene has an MFR (measured at a temperature of 190 ° C. and a load of 21.18 N) of usually 1 to 100 g / 10 minutes, preferably 5 to 80 g / 10 minutes, more preferably 10 to 50 g / 10. Minutes can be used. In addition, MFR of polyethylene derived from a plant is measured based on JIS K6922-2. The plant-derived high-density polyethylene can be a synthetic product, but can also be selected from commercially available products. Commercially available products include plant-derived high-density polyethylene belonging to Green Polyethylene manufactured by Brasschem (Brazil).

The plant-derived low density polyethylene is generally a plant-derived polyethylene having a density of 0.910 to 0.930 g / cm ³ , preferably 0.912 to 0.928 g / cm ³ . The plant-derived low-density polyethylene has an MFR (measured at a temperature of 190 ° C. and a load of 21.18 N) of usually 1 to 100 g / 10 minutes, preferably 5 to 80 g / 10 minutes, more preferably 10 to 50 g / 10. Minutes can be used. As plant-derived low-density polyethylene, plant-derived high-pressure polyethylene (soft polyethylene) obtained by using a so-called Ziegler-Natta catalyst, plant-derived linear low-density polyethylene (LLDPE), etc. Copolymers of ethylene and other olefins derived from plants can also be used. As plant-derived low-density polyethylene such as plant-derived linear low-density polyethylene, synthetic products can be used, but commercially available products may be used. Examples of commercially available products include plant-derived linear low-density polyethylene belonging to Green Polyethylene manufactured by Brasschem.

  As is well known, it should be noted that there is no direct relationship between a plant-derived synthetic resin and a biodegradable synthetic resin. For example, polylactic acid (not belonging to plant-derived polyolefin), which is a plant-derived synthetic resin, is commercially available as NatureWorks (registered trademark) PLA manufactured by NatureWorks, and is also known as a biodegradable resin. .

  The cap having a toggle structure containing the plant-derived polyolefin of the present invention contains a polyolefin having a modern carbon ratio of 56.7 to 118 pMC as defined in ASTM D6866-11 in a synthetic resin material. It is a cap provided with a toggle structure containing a plant-derived polyolefin. The cap having a toggle structure containing the plant-derived polyolefin of the present invention is specifically a polyolefin containing 55% by mass or more of plant-derived polyolefin in a synthetic resin material, that is, 55% Corg.renew or more. Means a synthetic resin material containing a polyolefin.

  The fact that the polyolefin in the synthetic resin material contains 55% by mass or more of plant-derived polyolefin was calculated with a modern carbon ratio of 56.7 pMC (103 pMC × 0.55 = 56.65 pMC as described above). It was determined based on the results.) That is, when the cap having a toggle structure containing the plant-derived polyolefin of the present invention contains a plant-derived polyolefin and a fossil fuel-derived polyolefin as the polyolefin in the synthetic resin material, the fossil fuel-derived polyolefin The modern carbon ratio specified in ASTM D6866-11 can be regarded as almost 0 pMC. Therefore, if the value of the modern carbon ratio of the plant-derived polyolefin is known, the content ratio of both is that of the plant-derived polyolefin. It can be calculated by comparing the value of the modern carbon ratio with the value of the modern carbon ratio of the polyolefin in the synthetic resin material. For example, if the value of the modern carbon ratio of a polyolefin in a synthetic resin material containing a plant-derived polyolefin known to have a modern carbon ratio of 104 pMC is 57 pMC, the polyolefin in the synthetic resin material is a plant It can be said that it is composed of 55% by mass of polyolefin derived from 45% by mass of polyolefin derived from fossil fuel.

  The polyolefin in the synthetic resin material may be a plant-derived polyolefin 100% by mass (100% Corg.renew) (in that case, the upper limit of the modern carbon ratio is 118 pMC). The plant-derived polyolefin is preferably 60% by mass (ie 60% Corg.renew) or more (corresponding to 61.8 pMC or more), more preferably 70% by mass (ie 70% Corg.renew). It is more than that (corresponding to being 72.1 pMC or more), more preferably 80% by mass (that is, 80% Corg.renew) or more (corresponding to being 82.4 pMC or more). Desirable from the viewpoint of offset property. Therefore, the cap having a toggle structure containing the plant-derived polyolefin of the present invention is 45% by mass or less, preferably 40% by mass, of synthetic resin such as polyolefin derived from fossil fuel in the synthetic resin in the synthetic resin material. In the following, it can be contained in an amount of 30% by mass or less, more preferably 20% by mass or less, but it may not contain any synthetic resin such as polyolefin derived from fossil fuel. If the synthetic resin such as polyolefin derived from fossil fuel exceeds 45% by mass, carbon negative may occur.

2. Fossil fuel-derived polyolefin The cap having a toggle structure containing the plant-derived polyolefin of the present invention is derived from fossil fuels within the range not to impair the object of the present invention in addition to the plant-derived polyolefin, as described above. Of polyolefins. Preferably, the following polyolefin can be used as the fossil fuel-derived polyolefin.

[Polyolefin derived from fossil fuel]
The fossil fuel-derived polyolefin preferably used as a fossil fuel-derived synthetic resin that can be contained in a cap having a toggle structure containing the plant-derived polyolefin of the present invention includes fossil fuel-derived ethylene, propylene, and butene. , Homopolymers or copolymers of olefinic monomers of fossil fuel derived alkenes such as pentene. Preferably, it is an ethylene-based resin derived from fossil fuel or a propylene-based resin derived from fossil fuel, and when importance is attached to repeated fatigue resistance, a propylene-based resin derived from fossil fuel can be used.

[Ethylene resin derived from fossil fuel]
The fossil fuel-derived ethylene-based resin is a fossil fuel-derived ethylene homopolymer or a fossil fuel-derived ethylene copolymer mainly composed of fossil fuel-derived ethylene, and the copolymer is a fossil fuel. It is a copolymer of ethylene derived from other olefins derived from other fossil fuels and / or unsaturated monomers derived from other fossil fuels. Preferred fossil fuel-derived ethylene resins include low-density polyethylene derived from fossil fuel, high-density polyethylene derived from fossil fuel, and metallocene-catalyzed ethylene polyolefin derived from fossil fuel.

As the high density polyethylene derived from fossil fuel, those having the same density, MFR, etc. as those of plant-derived high density polyethylene can be used, and generally derived from fossil fuel having a density of 0.942 g / cm ³ or more. Polyethylene. A synthetic product can be used as the high-density polyethylene derived from fossil fuel, but it can also be selected from commercially available products. As a commercially available product, a low-pressure method derived from a fossil fuel obtained using a so-called Ziegler-Natta catalyst (hereinafter sometimes referred to as “Ziegler catalyst”), which is well known as a catalyst for stereoregular polymerization of α-olefins. Examples of such high-density polyethylene include Novatec HD (registered trademark) manufactured by Nippon Polyethylene Co., Ltd., Hi-Zex (registered trademark) manufactured by Prime Polymer Co., Ltd., and High-density polyethylene manufactured by Brasschem (brand name IE59U3).

  As the low-density polyethylene derived from fossil fuel, those having the same density, MFR, etc. as the low-density polyethylene derived from plants can be used. As low-density polyethylene derived from fossil fuel, in addition to so-called high-pressure polyethylene derived from fossil fuel (soft polyethylene) obtained using a Ziegler-Natta catalyst, linear low-density polyethylene derived from fossil fuel (LLDPE), etc. Copolymers of ethylene derived from fossil fuels and olefins derived from other fossil fuels can also be used. As the low density polyethylene derived from fossil fuel, a synthetic product can be used, but a commercially available product may be used. Commercially available products include Novatec LD (registered trademark) manufactured by Nippon Polyethylene Co., Ltd., and low density polyethylene derived from fossil fuel manufactured by Mitsui DuPont Polychemical Co., Ltd.

  The fossil fuel-derived metallocene catalyst ethylene-based polyolefin means fossil fuel-derived ethylene-based resin obtained using a metallocene catalyst, and the main component is fossil fuel-derived ethylene or fossil fuel-derived ethylene. It is an ethylene-based resin obtained by polymerizing a mixed monomer having a derived α-olefin as a subcomponent in the presence of a metallocene catalyst. Therefore, the fossil fuel-derived metallocene-catalyzed ethylene-based polyolefin contains a fossil fuel-derived polyethylene or a fossil fuel-derived ethylene / α-olefin copolymer obtained by conducting a polymerization reaction in the presence of a metallocene catalyst. As the α-olefin derived from fossil fuel, those having 3 to 10 carbon atoms are preferable, and propylene, butene-1, pentene-1, hexene-1, 4-methylpentene-1, and heptene derived from fossil fuel. -1, octene-1, and the like. These fossil fuel-derived α-olefins are preferably present in the copolymer in an amount of 3 to 15 mol%.

Fossil fuel-derived metallocene-catalyzed ethylene-based polyolefins are characterized by a narrow molecular weight distribution. In the present invention, polydispersity (measured according to Mw / Mn, JIS K6922-2), which is an index of molecular weight distribution. Is usually 1.2-6, preferably 1.5-4. For the purpose of improving moldability, those having relatively long chain branches introduced during polymerization or in subsequent steps are also preferably used. The metallocene-catalyzed ethylene-based polyolefin derived from fossil fuel usually has a density of about 0.890 to 0.920 g / cm ³ , preferably about 0.892 to 0.918 g / cm ³ , and MFR (temperature 190 ° C., A load having a load of 21.18 N is usually 1 to 100 g / 10 minutes, preferably 5 to 80 g / 10 minutes, more preferably about 10 to 50 g / 10 minutes. As the metallocene-catalyzed ethylene-based polyolefin derived from fossil fuel, a synthetic product can be used, but it can also be selected from commercially available products. Examples of commercially available products include Exelen (registered trademark) manufactured by Sumitomo Chemical Co., Ltd. and Harmolex (registered trademark) manufactured by Nippon Polyethylene Co., Ltd.

[Propylene-based resin derived from fossil fuel]
The propylene-based resin derived from fossil fuel is a homopolymer of propylene derived from fossil fuel or a propylene copolymer derived from fossil fuel whose main component is propylene derived from fossil fuel, and the copolymer is a fossil fuel. It is a copolymer of propylene derived from other fossil fuels such as ethylene derived from fossil fuels (α-olefins) and / or unsaturated monomers derived from other fossil fuels. Preferred propylene-based resins derived from fossil fuel include Ziegler-catalyzed propylene homopolymer derived from fossil fuel or Ziegler-catalyzed propylene random copolymer derived from fossil fuel, metallocene-catalyzed propylene homopolymer derived from fossil fuel, or metallocene derived from fossil fuel. There are catalytic propylene random copolymers, metallocene catalyst propylene block copolymers derived from fossil fuels, and the like.

  A Ziegler-catalyzed propylene homopolymer derived from fossil fuel or a Ziegler-catalyzed propylene random copolymer derived from fossil fuel is a propylene homopolymer derived from fossil fuel or fossil fuel obtained using a Ziegler-Natta catalyst. It is a propylene random copolymer derived from it. The content of propylene monomer units derived from fossil fuel in the Ziegler-catalyzed propylene random copolymer derived from fossil fuel is 100 to 94% by mass (excluding 100% by mass), preferably 99.7. ~ 95 mass%, more preferably 99.5-95.5 mass%, and the content of α-olefin monomer units derived from fossil fuel is 0-6 mass% (excluding 0 mass%), preferably It is a random copolymer derived from fossil fuel in a proportion of 0.3 to 5% by mass, more preferably 0.5 to 4.5% by mass. Examples of the fossil fuel-derived α-olefin copolymerized with the fossil fuel-derived propylene include ethylene derived from fossil fuel and / or α-olefin having 4 to 20 carbon atoms derived from fossil fuel. Specifically, And fossil fuel-derived ethylene, butene-1, pentene-1, hexene-1, octene-1, 4-methylpentene-1, and the like. Two or more kinds of the fossil fuel-derived α-olefin can be used in combination.

The density of the Ziegler-catalyzed propylene homopolymer derived from fossil fuel or the Ziegler-catalyzed propylene random copolymer derived from fossil fuel is usually 0.880 to 0.930 g / cm ³ , preferably 0.885 to 0.925 g. / Cm ³ , and MFR (measured at a temperature of 190 ° C. and a load of 21.18 N) is usually 1 to 100 g / 10 minutes, preferably 5 to 80 g / 10 minutes, more preferably about 10 to 50 g / 10 minutes. Can be used. The polydispersity (Mw / Mn) is usually in the range of 1.2 to 6, preferably 1.5 to 4, and is effective in terms of improving moldability. As the Ziegler-catalyzed propylene homopolymer derived from fossil fuel or the Ziegler-catalyzed propylene random copolymer derived from fossil fuel, a synthetic product can be used, but a commercially available product may be used. Examples of commercially available products include Novatec PP (registered trademark) manufactured by Nippon Polypro Co., Ltd., Sumitomo Nobren (registered trademark) manufactured by Sumitomo Chemical Co., Ltd., Sun Allomer (registered trademark) manufactured by Sun Allomer Co., Ltd., and Prime Polymer Co., Ltd. Prime Polypro (registered trademark).

  The metallocene-catalyzed propylene homopolymer derived from fossil fuel or the metallocene-catalyzed propylene random copolymer derived from fossil fuel is a propylene homopolymer derived from fossil fuel, or derived from fossil fuel, obtained using a metallocene catalyst. Propylene random copolymer. The metallocene-catalyzed propylene random copolymer derived from fossil fuel has a content of propylene monomer units derived from fossil fuel in the copolymer of 100 to 94% by mass (excluding 100% by mass), preferably 99.7. ~ 95 mass%, more preferably 99.5-95.5 mass%, and the content of α-olefin monomer units derived from fossil fuel is 0-6 mass% (excluding 0 mass%), preferably A random copolymer having a ratio of 0.3 to 5% by mass, more preferably 0.5 to 4.5% by mass. Examples of the fossil fuel-derived α-olefin copolymerized with the fossil fuel-derived propylene include ethylene derived from fossil fuel and / or α-olefin having 4 to 20 carbon atoms derived from fossil fuel. Specifically, And fossil fuel-derived ethylene, butene-1, pentene-1, hexene-1, octene-1, 4-methylpentene-1, and the like. Two or more kinds of the fossil fuel-derived α-olefin can be used in combination.

The metallocene-catalyzed propylene homopolymer derived from fossil fuel or the metallocene-catalyzed propylene random copolymer derived from fossil fuel usually has a density of 0.880 to 0.930 g / cm ³ , preferably 0.885 to 0.925 g. / Cm ³ and MFR (measured at a temperature of 190 ° C. and a load of 21.18 N) is usually 1 to 100 g / 10 minutes, preferably 5 to 80 g / 10 minutes, more preferably about 10 to 50 g / 10 minutes. Things can be used. Moreover, what has polydispersity (Mw / Mn) in the range of 1.2-6 normally, preferably 1.5-4 is effective at the point of a moldability improvement. As the metallocene-catalyzed propylene homopolymer derived from fossil fuel or the metallocene-catalyzed propylene random copolymer derived from fossil fuel, a synthetic product can be used, but it can also be selected from commercially available products. Examples of commercially available products include Wintec (registered trademark) manufactured by Nippon Polypro Co., Ltd.

  Fossil fuel-derived metallocene-catalyzed propylene block copolymer is a polymer comprising a block of polymer made of fossil fuel-derived polypropylene and an ethylene / propylene copolymer derived from fossil fuel, obtained using a metallocene catalyst. And a block copolymer comprising: Specifically, a polymer block made of a fossil fuel-derived polypropylene (hereinafter sometimes referred to as “PP block”) and a polymer block made of a fossil fuel-derived propylene / ethylene copolymer (hereinafter “EP”). Is a block copolymer obtained by using a metallocene catalyst, each of which is bonded to one or more blocks, and maintains the rigidity of the polypropylene while maintaining the rigidity of the propylene / ethylene copolymer. It is a block copolymer derived from a fossil fuel known per se, which exhibits a high rigidity and impact resistance with improved fatigue resistance in a well-balanced manner.

The fossil fuel-derived metallocene-catalyzed propylene-based block copolymer usually has a density of about 0.880 to 0.930 g / cm ³ , preferably about 0.885 to 0.925 g / cm ³ , and MFR (temperature 190 ° C. , Measured at a load of 21.18 N) is usually 1 to 100 g / 10 min, preferably 5 to 80 g / 10 min, more preferably about 10 to 50 g / 10 min. Moreover, what has polydispersity (Mw / Mn) in the range of 1.2-6 normally, preferably 1.5-4 is effective at the point of a moldability improvement. As the metallocene-catalyzed propylene-based block copolymer derived from fossil fuel, a synthetic product can be used, but it can also be selected from commercially available products. Examples of commercially available products include Novatec PP (registered trademark) manufactured by Nippon Polypro Co., Ltd., Sumitomo Nobren (registered trademark) manufactured by Sumitomo Chemical Co., Ltd., Sun Allomer (registered trademark) manufactured by Sun Allomer Co., Ltd., and Prime Polymer Co., Ltd. Examples include Prime Polypro (registered trademark) and Kernel (registered trademark) manufactured by Nippon Polyethylene Corporation.

  Note that a cap having a toggle structure integrally formed from a synthetic resin material containing a plant-derived polyolefin contains a synthetic resin obtained using a Ziegler catalyst or a metallocene catalyst. Qualitative analysis of the resin pellet specimen shaved from the specimen using a scanning electron microscope equipped with an energy dispersive X-ray detector to detect trace element types of catalyst remaining in the specimen. Appearance peaks corresponding to the energy of Group IVa Ti, which is a transition metal of 4 periods, Group Va, which is a transition metal of 4th period, or Cr of Group VIa, which is a transition metal of 4th period ( Ziegler catalyst), or Zr of group IVa, which is a transition metal of the fifth period of the periodic table, or Hf of group IVa, which is a transition metal of the sixth period. The confirmation of the presence of a peak equivalent to (metallocene catalyst), can be confirmed.

3. Modifying agent or moldability improving agent A cap having a toggle structure, which contains the plant-derived polyolefin of the present invention, in addition to the polyolefin derived from the fossil fuel exemplified above, and, if desired, a modifying agent or moldability. Contains fossil fuel-derived resin components such as fossil fuel-derived ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / methyl acrylate copolymer, and maleic anhydride-modified polyolefin. Can do. The content of the resin component derived from fossil fuel contained as a modifier or moldability improver is usually 20% by mass or less, preferably 10% by mass or less, more preferably 5% by mass in the resin component in the synthetic resin material. % Or less.

4). Fatty acid amide having unsaturated cis-structured carbon double bond The cap having a toggle structure containing the plant-derived polyolefin of the present invention is a fatty acid amide having a toggle structure (3) having an unsaturated cis-structured carbon double bond ( It consists of a synthetic resin material containing 100-4500 ppm of A). That is, the cap having a toggle structure containing the plant-derived polyolefin of the present invention has at least a toggle structure (3) such as the above-described plant-derived polyolefin alone, or a plant-derived polyolefin and a fossil fuel-derived polyolefin. In addition to a synthetic resin (which may contain a fossil fuel-derived resin component contained as a modifier or moldability improver), a fatty acid amide (A) having an unsaturated cis-structured carbon double bond is toggled. The content is 100 to 4500 ppm with respect to the total mass of the synthetic resin material forming the structure (3). The cap body (1), the overcap (2), and the toggle structure (3) are made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond. It is preferable. The fatty acid amide (A) having an unsaturated cis-structured carbon double bond (hereinafter sometimes referred to as “unsaturated fatty acid amide of (A)”) means at least one bond of carbon diamide in the molecular structure of the fatty acid amide. An unsaturated fatty amide having a heavy bond, wherein all of the carbon double bonds are unsaturated cis-structured carbon double bonds.

  The cap having a toggle structure containing the plant-derived polyolefin of the present invention is a synthetic resin material in which at least the toggle structure (3) contains 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond. The overcap (2) can be maintained in a stable open state, the elevation angle in the open state is sufficiently large, and snapping, durability and operability are good, and the container In the step of attaching the cap to the cap, it is possible to provide a cap having a toggle structure formed integrally from a synthetic resin material, which has good transportability in cap supply. The content of the unsaturated fatty acid amide (A) is preferably 110 to 4400 ppm, more preferably 115 to 4300 ppm, still more preferably 120 to 4200 ppm, and particularly preferably 125 to 4100 ppm. In addition, when the unsaturated fatty acid amide (A) is a mixture of fatty acid amides having two or more types of unsaturated cis structure carbon double bonds as described later, the total content of fatty acid amides is within the above range. Need to be included.

  When the content of the unsaturated fatty acid amide in (A) is in the above range, in the step of attaching the cap to the container, the transportability in supplying the cap can be improved. When the content of the unsaturated fatty acid amide in (A) is out of the above range, in the step of attaching the cap to the container, the cap supply means contains a plant-derived polyolefin and the cap having a toggle structure is clogged. Further, there is a possibility that troubles such as stopping of the filling container manufacturing apparatus may occur due to a delay in the supply of the cap having the toggle structure to the capper.

  Fatty acid amides, particularly fatty acid amides having an unsaturated bond, are conventionally known to function as lubricants for various synthetic resins, but unsaturated fatty acid amides have a carbon double bond with a trans structure. And the uniform compounding of the synthetic resin material becomes insufficient, or the unsaturated fatty acid amide having the trans structure includes a toggle structure (3) and, in some cases, a cap body (1) and an overcap (2). Resin loss due to local foaming may occur or precipitate on the outer surface of the cap. As a result, the surface gloss and feel of the outer surface of the cap such as the toggle structure (3) may deteriorate, The slipping property of the cap provided may deteriorate, and in the step of attaching the cap to the container, the transportability in supplying the cap may not be good.

  The unsaturated fatty acid amide of (A) is preferably an unsaturated fatty acid amide having one bond of a carbon double bond having an unsaturated cis structure in the molecular structure. In addition, the unsaturated fatty acid amide of (A) may be an unsaturated fatty acid amide having a plurality of unsaturated cis-structured carbon double bonds in the molecular structure, and an unsaturated cis-structured carbon double bond in the molecular structure. , Preferably 6 bonds or less, more preferably 5 bonds or less, and still more preferably 4 bonds or less. Therefore, the unsaturated fatty acid amide (A) may contain a compound having an unsaturated cis structure carbon double bond having 2 to 4 bonds of unsaturated cis structure carbon double bonds in the molecular structure. .

[Unsaturated fatty acid amide having one carbon double bond of unsaturated cis structure in the molecular structure]
Examples of the unsaturated fatty acid amide (A) having one bond of a carbon double bond having an unsaturated cis structure include the following formulas (A ₁ ) to (A ₃ ):
(A ₁ ) H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ —) _n —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10);
(A ₂ ) H ₂ N—CO — (— CH ₂ —) _m−2 —CH═CH — (— CH ₂ —) _m —CH ₃ (where m is an integer in the range of 6 ≦ m ≦ 10) And (A ₃ ) H ₂ N—CO — (— CH ₂ —) _{k + 4} —CH═CH — (— CH ₂ —) _k —CH ₃ (where k is an integer in the range of 6 ≦ k ≦ 10); ;
And at least one fatty acid amide compound represented by one formula selected from the group consisting of: (Hereinafter, (the fatty acid amide of the formula of _{A 1),} there may be referred to as "Formula _{(A 1} fatty acid amides)", further may be simply referred to as "Formula _{(A 1)". (A} 2) The same applies to the fatty acid amide represented by the formula (A ₃ ).)

Examples of the unsaturated fatty acid amide (A) having one carbon double bond having an unsaturated cis structure include compounds represented by the following formulas (A ₁ ) to (A ₃ ).

Formula (A ₁ ): H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ —) _n —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10)
cis-8,9-hexadecenoamide [H ₂ N—CO — (— CH ₂ —) ₆ —CH═CH — (— CH ₂ —) ₆ —CH ₃ ] (corresponding to n = 6)
cis-9,10-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] (corresponding to n = 7)
cis-10, 11-eicosenoamide [H ₂ N—CO — (— CH ₂ —) ₈ —CH═CH — (— CH ₂ —) ₈ —CH ₃ ] (corresponding to n = 8)
cis-11,12-ethaeicosenoamide [H ₂ N—CO — (— CH ₂ —) ₉ —CH═CH — (— CH ₂ —) ₉ —CH ₃ ] (corresponding to n = 9)
cis-12, 13- tetraeicosenoamide (corresponding to n = 10) _{[H 2 N-CO - (-} CH 2 -) 10 -CH = CH - (- - CH 2) 10 -CH 3 ]

Formula (A ₂ ): H ₂ N—CO — (— CH ₂ —) _{m− 2} —CH═CH — (— CH ₂ —) _m —CH ₃ (where m is in the range of 6 ≦ m ≦ 10) integer)
cis-6,7-tetradecenoamide _{[H 2 N-CO - (-} CH 2 -) 4 -CH = CH - (- CH 2 -) 6 -CH 3 ] (corresponding to m = 6)
cis-7,8-hexadecenoamide [H ₂ N—CO — (— CH ₂ —) ₅ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] (corresponding to m = 7)
cis-8,9-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₆ —CH═CH — (— CH ₂ —) ₈ —CH ₃ ] (corresponding to m = 8)
cis-9,10-eicosenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH ₂ —) ₉ —CH ₃ ] (corresponding to m = 9)
cis-10, 11- ethaeicosenoamide (corresponding to m = 10) _{[H 2 N-CO - (-} CH 2 -) 8 -CH = CH - (- - CH 2) 10 -CH 3 ]

Formula (A ₃ ): H ₂ N—CO — (— CH ₂ —) _{k + 4} —CH═CH — (— CH ₂ —) _k —CH ₃ (where k is an integer in the range of 6 ≦ k ≦ 10)
cis-12,13-eicosenoamide [H ₂ N—CO — (— CH ₂ —) ₁₀ —CH═CH — (— CH ₂ —) ₆ —CH ₃ ] (corresponding to k = 6)
cis-13,14-docosenoamide [H ₂ N—CO — (— CH ₂ —) ₁₁ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] (corresponding to k = 7)
cis-14,15- tetracosenoamide (corresponding to k = 8) _{[H 2 N-CO - (-} CH 2 -) 12 -CH = CH - 8 -CH 3 (- - CH 2) ]
cis-15,16-hexacosenoamide [H ₂ N—CO — (— CH ₂ —) ₁₃ —CH═CH — (— CH ₂ —) ₉ —CH ₃ ] (corresponding to k = 9)
cis-16,17- octacosenoamide (corresponding to k = 10) _{[H 2 N-CO - (-} CH 2 -) 14 -CH = CH - (- - CH 2) 10 -CH 3 ]

[Unsaturated fatty acid amide having 2 to 4 carbon double bonds of unsaturated cis structure in the molecular structure]
The unsaturated fatty acid amide of (A), which is a compound having 2 to 4 bonds of unsaturated cis structure carbon double bonds in the molecular structure, includes, for example, an unsaturated cis structure carbon double bond in the molecular structure. The following compounds having 4 bonds are exemplified.

cis-5,6-8,9-11,12-14,15-arachidonic acid amide [H ₂ N—CO — (— CH ₂ —) ₃ —CH═CH—CH ₂ —CH═CH—CH ₂ — _{CH = CH-CH 2 -CH =} CH - (- CH 2 -) 4 -CH 3 ]

  The unsaturated fatty acid amide of (A), which is a compound having 2 to 4 carbon double bonds of unsaturated cis structure in the molecular structure, can be used alone or with other unsaturated fatty acid amides of (A) It can also be used as a mixture.

[Mixture of (A) unsaturated fatty acid amide]
As the unsaturated fatty acid amide of (A), a fatty acid amide of the above formulas (A ₁ ) to (A ₃ ), or a carbon double bond of an unsaturated cis structure of 2 to 4 bonds in the molecular structure. The use of one type of unsaturated fatty acid amide selected from fatty acid amides can provide the desired effect, but even if a mixture of two or more types of unsaturated fatty acid amides (A) is used. Good. The mixture of unsaturated fatty acid amides (A) preferably contains the fatty acid amide of the above formula (A ₁ ).

Accordingly, a preferred mixture of unsaturated fatty acid amides of (A) includes the fatty acid amide of the above formula (A ₁ ) and at least one fatty acid amide represented by the above formula of (A ₂ ) or (A ₃ ) And a mixture. The proportion of the fatty acid amide of the formula (A ₁ ) in the mixture is 0.05 to 99.95% by mass, preferably 0.1 to 99.9% by mass, more preferably 0.15 to 99.85% by mass. It is. Therefore, the ratio of the fatty acid amide of the formula (A ₂ ) or the fatty acid amide of the formula (A ₃ ) is 99.95 to 0.05% by mass, preferably 99.9 to 0.1% by mass, Preferably it is 99.85-0.15 mass%.

In particular, the mixture of unsaturated fatty acid amides of (A) is a fatty acid amide of formula (A ₁ ), ie H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ — ) _N —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10) and the fatty acid amide of the above formula (A ₂ ), that is, H ₂ N—CO — (— CH ₂ —) _{m— 2} -CH═CH — (— CH ₂ —) _m —CH ₃ (where m is an integer in the range of 6 ≦ m ≦ 10), and m = n + 1 or m = n−1 And a mixture thereof.

Specifically, the formula (A ₁ ) is cis-9,10-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] ( n = 7), and
Formula _{(A 2)} is, cis-6,7-tetradecenoamide _{[H 2 N-CO - (-} CH 2 -) 4 -CH = CH - (- CH 2 -) 6 -CH 3 ] (m = 6 = n -1) or cis-8,9-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₆ —CH═CH — (— CH ₂ —) ₈ —CH ₃ ] (m = 8 = (equivalent to n + 1) can be preferably used, and cis-10, 11-ethaeicosenoamide [H ₂ N—CO — (— CH ₂ —) ₈ —CH═CH — (— CH ₂ —) ₁₀ Mixtures of combinations with —CH ₃ ] (m = 10) can also be used.

In addition, the mixture of unsaturated fatty acid amides of (A) is a fatty acid amide of the above formula (A ₁ ), that is, H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ — ) _N- CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10) and the fatty acid amide of the above formula (A ₃ ), that is, H ₂ N—CO — (— CH ₂ —) _{k + 4} − CH = CH — (— CH ₂ —) _k —CH ₃ (where k is an integer in the range of 6 ≦ k ≦ 10), and is preferably a mixture with the fatty acid amide in which k = n. .

Specifically, the formula (A ₁ ) is cis-9,10-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] ( n = 7), and the formula (A ₃ ) is cis-13,14-docosenoamide [H ₂ N—CO — (— CH ₂ —) ₁₁ —CH═CH — (— CH ₂ —) ₇ — CH ₃ ] (corresponding to k = 7 = n) is preferably used.

Furthermore, as the mixture of unsaturated fatty acid amides of (A), a mixture of two or more compounds belonging to the fatty acid amides of formula (A ₁ ) and having different values of n can be used. That is, (A ₁ ) H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ —) _n —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10) And (A ₁₁ ) H ₂ N—CO — (— CH ₂ —) _j —CH═CH — (— CH ₂ —) _j —CH ₃ (where j is an integer in the range of 6 ≦ j ≦ 10) , J ≠ n)).

Specifically, for example, as formula (A ₁ ), cis-9,10-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH ₂ —) ₇ —CH ₃ ] (Corresponding to n = 7) and formula (A ₁₁ ), cis-8,9-hexadecenoamide [H ₂ N—CO — (— CH ₂ —) ₆ —CH═CH — (— CH ₂ —) ₆ A mixture with —CH ₃ ] (corresponding to j = 6) can be preferably used.

Furthermore, the unsaturated fatty acid amide of (A) which is a compound having 2 to 4 carbon double bonds of unsaturated cis structure in the molecular structure is mixed with other unsaturated fatty acid amides of (A). It can also be used. As the other unsaturated fatty acid amides (A), the fatty acid amides of the above formulas (A ₁ ) to (A ₃ ) are preferably used, and the fatty acid amides of the formula (A ₁ ) are particularly preferable. Specifically, cis-5,6-8,9-11,12-14,15-arachidonic acid amide [H ₂ N—CO — (— CH ₂ —) ₃ —CH═CH—CH ₂ —CH═ _{CH-CH 2 -CH = CH-} CH 2 -CH = CH - (- CH 2 -) and 4 -CH _3], a mixture of cis-9,10-octadecenoamide represented by the formula _{(a 1)} and It can be preferably used.

[Method for producing unsaturated fatty acid amide (A)]
In the cap having a toggle structure containing the plant-derived polyolefin of the present invention, the unsaturated fatty acid amide (A) contained in at least the toggle structure (3) may be a commercially available product or a commercially available product. Is a mixture or contains impurities, it may be obtained by separating the desired unsaturated fatty acid amide by an operation such as extraction. Also, for example, the fatty acid amide of the above formula (A ₂ ), that is, (A ₂ ) H ₂ N—CO — (— CH ₂ —) _m−2 —CH═CH — (— CH ₂ —) _m —CH ₃ (where m is an integer in the range of 6 ≦ m ≦ 10) can be produced by the following method, and may be obtained as a synthetic product.

The following (formula a) having a CH ₃ O—CO— terminal group and a hydroxyl group terminal or a carboxylic acid terminal at the α, ω positions and a (m−1) -linked methylene group (—CH ₂ —) _m−1 ) As a starting material. ((Formula a) illustrates a compound having a hydroxyl terminal.)
(Formula _{a) CH 3 O-CO -} (- CH 2 -) m-1 -OH

The hydroxyl terminal of the compound represented by the formula (a) is bromine-substituted using carbon tetrabromide (CBr ₄ ), and then methyl cyanide (CH ₃ ) using triphenylphosphine (PPh ₃ , triphenylphosphine). CN) Bromine is reacted with PPh ₃ in a solvent to give an ionic intermediate of formula (b).
(Formula b) [CH ₃ O—CO — (— CH ₂ —) _m−1 -PPh ₃ ] ⁺ + Br ⁻

The ionic intermediate (formula b) is reacted with decyl aldehyde, and the PPh ₃ group is terminated with an alkyl group having an unsaturated cis-structured carbon double bond. , ω structure compound.
(Formula _{c) CH 3 O-CO -} (- CH 2 -) m-2 -CH = CH - (- CH 2 -) m -CH 3

Next, lithium hydroxide is reacted with the CH ₃ O—CO— terminal group of the α, ω structure compound of the formula (c) to form a hydroxyl terminal, which is saturated with ammonium in a solvent of oxalyl chrolide and methylene chloride. The fatty acid amide having an unsaturated cis structure carbon double bond represented by the following (formula d), that is, a fatty acid amide of (A ₂ ) is synthesized.
(Wherein _{d) H 2 N-CO -} (- CH 2 -) m-2 -CH = CH - (- CH 2 -) m -CH 3
By changing m (where m is an integer in the range of 6 ≦ m ≦ 10), a fatty acid amide having an unsaturated cis structure carbon double bond having a desired carbon number is obtained using this synthetic route. Can do.

In the synthesis of fatty acid amide having an unsaturated carbon double bond, as is well known, a compound having an unsaturated cis structure carbon double bond and a compound having an unsaturated trans structure carbon double bond are simultaneously prepared. As a result, chromatographic development is performed using a mixed solvent having a concentration gradient of 100% by mass (initial development) to 40% by mass of ethyl acetate and hexane, and isomerism of unsaturated cis structure and unsaturated trans structure is achieved. Separate the body. At that time, using a proton ¹ H-NMR nuclear magnetic resonance apparatus, identification according to the chemical shift value is performed based on a standard substance made by Aldorich for the fraction solution at each chromatography development time. Identify the fluid. The fraction solution is dried under reduced pressure to recover the desired fatty acid amide having an unsaturated cis structure carbon double bond.

5. Other compounding agents In the cap main body (1), overcap (2), and toggle structure (3) of the cap having a toggle structure containing the plant-derived polyolefin of the present invention, at least the toggle structure (3) In addition to the necessity of containing 100 to 4500 ppm of unsaturated fatty acid amide of (A), as necessary, as other compounding agents, reinforcing materials, fillers, antioxidants, photodegradation inhibitors, Additives such as antistatic agents, ultraviolet absorbers, or nucleating agents can be blended. As the reinforcing material or filler, talc, calcium carbonate, titanium oxide, carbon black, mica and the like can be used. What is necessary is just to select the quantity of the optimal range according to the objective of an additive in the range of 0.01-100 mass parts normally with respect to 100 mass parts of resin components about the compounding quantity of these additives. For example, the reinforcing material or filler can be blended in an amount of usually 10 to 100 parts by mass, preferably 15 to 80 parts by mass, and more preferably 20 to 60 parts by mass. Depending on the type of the additive, it may be usually 0.01 to 10 parts by mass, preferably 0.05 to 5 parts by mass, more preferably 0.1 to 2 parts by mass.

  In particular, as other compounding agents, other compounds known as lubricants can be used. The lubricant is preferably a saturated fatty acid amide, and at least the toggle structure (3) in the cap having a toggle structure containing the plant-derived polyolefin of the present invention contains a predetermined amount of the unsaturated fatty acid amide (A). In addition, by containing the saturated fatty acid amide, effects such as further improving the transportability in cap supply in the step of attaching the cap to the container are exhibited. As the saturated fatty acid amide, a compound usually used as a lubricant can be used, for example, butyramide, valeric acid amide, caproic acid amide, caprylic acid amide, capric acid amide, lauric acid amide, myristic acid amide, Examples include palmitic acid amide, stearic acid amide, arachidic acid amide, and behenic acid amide, and stearic acid amide and behenic acid amide are preferable. The content in the case of containing a saturated fatty acid amide is preferably 10% by mass or less, more preferably 8% by mass or less, and still more preferably, with respect to the total amount of the unsaturated fatty acid amide (A) and the saturated fatty acid amide. The lower limit of the content is about 0.5% by mass, and if it is 1% by mass, a sufficient effect can be realized.

III. Evaluation of Cap with Toggle Structure Containing Plant-Derived Polyolefin A cap with toggle structure containing plant-derived polyolefin of the present invention can maintain the overcap (2) in a stable open state. From the synthetic resin material, the elevation angle in the opened state is sufficiently large, the snapping property, the durability and the operability are good, and the transporting property in the cap supply is good in the process of attaching the cap to the container. It is a cap provided with a toggle structure formed integrally.

[Evaluation of elevation angle in the open state]
The cap having a toggle structure containing the plant-derived polyolefin of the present invention can maintain the overcap (2) in a stable open state, and the elevation angle in the open state is sufficiently large. Three test subjects (age 18-60) hold the overcap (2) in the cap in the closed state and operate it by hand to swing it to the open state. Opening when the position of the overcap (2) in the closed state is 0 ° when the overcap (2) is in the open state after releasing the hand after passing the (thought point) Evaluate by measuring the angle. The opening angle when three subjects operate is defined as the “elevation angle in the opened state” of the cap. The elevation angle in the opened state is preferably 150 to 180 °, more preferably 152 to 177 °, and still more preferably 155 to 175 °.

[Evaluation of transportability in cap supply (chute clogging evaluation)]
The cap having a toggle structure containing the plant-derived polyolefin of the present invention has good transportability of cap supply in the step of attaching the cap to the container, for example, as schematically shown in FIG. It can be evaluated by the following method. That is, 10,000 caps (c) having a toggle structure that has been previously closed are put into a hopper (not shown), and the hopper has a square cross section of 40 mm in length and 40 mm in width, and has a length of 500 mm. A cap (c) having a closed toggle structure is continuously put into a prismatic pipe (chute) at a feeding rate of 2 pieces / second and transferred to a capper device using a delivery device (D). . In this series of transfer steps, the number of times (out of 10,000) that the chute is clogged with the chute is counted. The measurement is performed three times, and the average value is used as the number of times of shoot clogging, and shoot clogging is evaluated according to the following criteria. If the chute clogging evaluation is “◯”, it can be said that the cap supply transportability is good in the process of attaching the cap to the container.
<Shoot clogging evaluation>
Choke clogging evaluation ○: Shoot clogging times 0-2 times Chute clogging evaluation ×: Shoot clogging times 3 times or more

[Evaluation of snap properties]
The snapping property of the cap having a toggle structure containing the plant-derived polyolefin of the present invention can be determined by the following click feeling evaluation. That is, a cap having a toggle structure integrally formed from a synthetic resin material containing a plant-derived polyolefin is swung from a closed state to an open state with respect to the cap body (1). Then, a test of repeating the operation of swinging from the open state to the closed state 50 times is performed by five test subjects (ages 18 to 60), and whether or not a pleasant click feeling is felt is evaluated. . A majority of the subjects determine that the click feeling is good for the cap provided with the toggle structure evaluated that the pleasant click feeling is sustained.

IV. Method for producing cap having toggle structure integrally formed from synthetic resin material The method for producing a cap having a toggle structure containing the plant-derived polyolefin of the present invention is not particularly limited. For example, a plant-derived polyolefin alone Or synthetic resins such as polyolefins derived from plants and polyolefins derived from fossil fuels, and fatty acid amides (A) having an unsaturated cis-structured carbon double bond, and other materials if necessary, synthetic resin materials Using a cavity-shaped mold corresponding to a cap having a toggle structure including a cap body (1), an overcap (2), and a toggle structure (3), injection molding, compression molding, cast molding It can be manufactured by vacuum molding, pressure molding, powder molding and other resin molding methods.

The cap having a toggle structure containing the plant-derived polyolefin of the present invention has a toggle structure (3) having a binding piece (3a) and a pair of support members (3b), and the binding piece (3a) includes both ends _(3a 1, 3a _2), the both end portions _(3a 1, 3a ₂₎ are each coupled to the outer peripheral surface and the top plate portion of the overcap (2) of the cap body (1) (2a) Only the end portion (3a ₁ ) connected inward of the periphery of the top plate portion (2a) of the overcap (2) is connected to the top plate portion (2a) of the overcap (2), and the overcap (2 ) In the vicinity of the end portion (3a ₁ ) connected to the top plate portion (2a) of the upper cap portion (2a). Disconnect from other areas near the edge In small thickness region, the surface on the side connected to the outer surface and having a recess (3a ₁₁₎ of the top plate portion of the overcap (2) (2a), said toggle structure (3) is an unsaturated cis structure carbon double It is characterized by comprising a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having a heavy bond. Therefore, in producing a cap having a toggle structure containing the plant-derived polyolefin of the present invention, a cavity-shaped mold corresponding to the toggle structure (3) is used, and an unsaturated cis-structure carbon dioxide is used. It is required to reliably supply a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having a heavy bond to a cavity-shaped mold corresponding to the toggle structure (3).

  In order to manufacture a cap having a toggle structure containing the plant-derived polyolefin of the present invention from the viewpoints of shape accuracy, ease of molding, etc., the cap body (1 ), The cap body (1), the overcap (2), and the toggle structure (3) using a cavity-shaped mold corresponding to the cap including the overcap (2) and the toggle structure (3). Are preferably molded integrally. In particular, it is preferable to integrally mold a cap having a toggle structure containing a plant-derived polyolefin by injection molding.

  Furthermore, after taking out the cap provided with the toggle structure integrally molded from the synthetic resin material containing the plant-derived polyolefin by the above-described molding method from the mold, the cap is usually overcap against the cap body (1). By swinging (2), the cap with a toggle structure containing a plant-derived polyolefin is closed, and heat-fixed in the closed state, the shape and dimensions of the cap with the toggle structure are adjusted. In addition, in the process of attaching the cap to the container, the transportability and snapping performance in the cap supply are further improved. In the heat setting, heat treatment is performed at a temperature of 30 to 80 ° C., preferably 35 to 75 ° C., more preferably 40 to 70 ° C. by a method known per se such as storage in a constant temperature room or hot air blowing. The time for performing the heat setting can be appropriately selected according to the temperature of the heat treatment and other conditions, but is usually 0.5 hours to 3 months, preferably 5 hours to 1 month, more preferably 1 day to 2 weeks. do it.

  EXAMPLES The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited to the examples. The measuring method of the characteristic or physical property of the cap provided with the synthetic resin raw material and the toggle structure in Examples and Comparative Examples is as follows.

[Density and MFR]
The density and MFR of the polyolefin were measured according to JIS K6922-2.

[Modern carbon ratio]
The modern carbon ratio of polyolefin was commissioned to Beta Analytic Co., Ltd. (Geoscience Research Institute, a general agency in Japan), and measured in accordance with ASTM D6866-11.

[Evaluation of elevation angle in the open state]
The evaluation of the elevation angle of the cap with the toggle structure in the open state is such that three subjects (ages 18 to 60) hold the overcap (2) in the cap in the closed state and enter the open state. The overcap (2) when the overcap (2) rests in the open state after the hand is operated so as to swing and the hand is released at a position past the turning point (thought point). This was carried out by measuring the opening angle when the position of the closed state was 0 °. The opening angle when the three subjects operated was defined as the “elevation angle in the opened state” of the cap.

[Shoot clogging evaluation]
It was evaluated by the following method that the cap having the toggle structure had good cap supply transportability in the step of attaching the cap to the container. In other words, 10,000 caps having a toggle structure that has been closed in advance are put into the hopper, and the prism has a square cross section of 40 mm in length and 40 mm in width and 500 mm in length from the hopper (chute). In addition, the cap (c) having the toggle structure in the closed state is continuously charged at a supply speed of 2 pieces / second, and transferred to the capper device using the delivery device (D). In this series of transfer steps, the number of times of chute clogging in the chute (out of 10,000) was counted. Measurement was performed three times, and the average value was taken as the number of times of shoot clogging, and shoot clogging was evaluated according to the following criteria.
<Shoot clogging evaluation>
Choke clogging evaluation ○: Shoot clogging times 0-2 times Chute clogging evaluation ×: Shoot clogging times 3 times or more

[Click feeling evaluation]
For the cap having the integrally formed toggle structure, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then is swung from the open state to the closed state. 5 subjects (aged 18 to 60 years old) conducted a test to repeat the operation to make a sensibility evaluation of whether or not a pleasant click feeling would be sustained, and a majority of the subjects evaluated that a pleasant click sensation would persist The cap provided with the toggle structure was determined to have good click feeling.

[Example 1]
Plant-derived high-density polyethylene [manufactured by Brasschem, brand name SGF4950, density 0.956 g / cm ³ , MFR (temperature 190 ° C., load 21.18 N) 28 g / 10 min, modern carbon ratio 104 pMC. Hereinafter, it may be referred to as “plant-derived polyethylene”. The polyolefin is 100% Corg.renew. ] Cis-9,10-octadecenoamide [H ₂ N—CO — (— CH ₂ —) ₇ —CH═CH — (— CH) as a fatty acid amide (A) having an unsaturated cis structure carbon double bond _2- ) _7- CH ₃ ; unsaturated fatty acid amide of formula (A ₁ )] (98% by mass) and cis-13,14-docosenoamide [H ₂ N—CO — (— CH ₂ —) ₁₁ —CH = CH-(-CH _2- ) ₇ -CH ₃ ; a mixture of unsaturated fatty acid amide of formula (A ₃ )] (2% by mass) is blended so as to be 3500 ppm with respect to plant-derived high-density polyethylene. Thus, a resin composition containing the unsaturated fatty acid amide (A) was obtained.

  The obtained resin composition containing the unsaturated fatty acid amide of (A) was supplied to an injection molding machine, and the cap main body (1), the overcap (2), and the toggle in a 180 ° open state were formed. Using a cavity-shaped mold corresponding to the cap having the structure (3), a cap having a toggle structure containing a plant-derived polyolefin was integrally molded by injection molding.

The shape and size of the cap body (1), the overcap (2), and the toggle structure (3) of the cap having the toggle structure were as follows.
1) Cap body (1): A substantially cylindrical shape having an outer diameter of 37 mm, an inner diameter of 33 mm, and a height of 27 mm. Outlet diameter 10mm
2) Overcap (2): A substantially cylindrical shape having an outer diameter of 37 mm, an inner diameter of 35 mm, and a height of 9 mm. The top plate portion (2a) has a disc shape with a diameter of 37 mm and a thickness of 1 mm, and a substantially rectangular cutout (slit) having a width of 8 mm and extending from the periphery to 9 mm inward.
3) Toggle structure (3)
Bonding piece (3a): It is a substantially L-shaped contour shape that is 8 mm wide, 1 mm thick, 15 mm long, and bends at a substantially right angle at a position 6 mm from the end (3a ₁ ). In the vicinity of the end portion (3a ₁ ) having a linear shape connected to the top plate portion (2a) of the overcap (2), the average thickness is 550 μm as a region having a thinner cross-sectional thickness than the other regions [that is, the coupling piece This corresponds to a thickness of 55% with respect to the thickness of the main part (3a). ] And a surface on the side continuous with the outer surface of the top plate portion (2a) of the overcap (2) in a region where the cross-sectional thickness is thinner than other regions (specifically, the main portion). The concave portion (3a ₁₁ ) has a depth of 110 μm [that is, a groove depth of 20% with respect to the thickness (550 μm) of the region whose cross-sectional thickness is thinner than the main portion. ] In the shape of a semicircular cross section.
Support member (3b): A substantially rectangular parallelepiped shape having a width of 2 mm and a thickness of 500 μm on both sides of the coupling piece (3a).

  A cap having a toggle structure containing a plant-derived polyolefin molded by injection molding is taken out of the mold, and then the overcap (2) is swung to form a toggle structure containing a plant-derived polyolefin. When the cap provided was closed and heat-set at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For a cap having a toggle structure containing a plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the open state When the operation of swinging the lid to the closed state was repeated 50 times, it was determined that a pleasant click feeling persisted and the click feeling was good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Example 2]
Except for a change in the composition of the fatty acid amide (A) having an unsaturated cis-structured carbon double bond to 130 ppm with respect to the plant-derived polyethylene, in the same manner as in Example 1, by injection molding, A cap having a toggle structure containing the derived polyolefin was integrally molded.

  A cap having a toggle structure containing a plant-derived polyolefin molded by injection molding is taken out of the mold, and then the overcap (2) is swung to form a toggle structure containing a plant-derived polyolefin. When the cap provided was closed and heat-set at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For a cap having a toggle structure containing a plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the open state When the operation of swinging the lid to the closed state was repeated 50 times, it was determined that a pleasant click feeling persisted and the click feeling was good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Example 3]
Fatty acid amide (A) having an unsaturated cis structure carbon double bond is converted into cis-13,14-docosenoamide [unsaturated fatty acid amide of formula (A ₃ )] (98% by mass) and cis-9,10- The same procedure as in Example 1 was conducted except that the composition was changed to a mixture of octadecenoamide [unsaturated fatty acid amide of formula (A ₁ )] (2% by mass) and 4000 ppm with respect to plant-derived polyethylene. Then, a cap having a toggle structure containing a plant-derived polyolefin was integrally molded by injection molding.

  A cap having a toggle structure containing a plant-derived polyolefin molded by injection molding is taken out of the mold, and then the overcap (2) is swung to form a toggle structure containing a plant-derived polyolefin. When the cap provided was closed and heat-set at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For a cap having a toggle structure containing a plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the open state When the operation of swinging the lid to the closed state was repeated 50 times, it was determined that a pleasant click feeling persisted and the click feeling was good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Example 4]
In place of the single use of the plant-derived polyethylene, 90% by mass of the plant-derived polyethylene and high-density polyethylene derived from fossil fuel (Blaschem, brand name IE59U3, density 0.959 g / cm ³ , MFR (temperature 190) C, load 2.12 N) 5 g / 10 min, modern carbon ratio 0 pMC. Hereinafter, it may be referred to as “fossil fuel-derived polyethylene”. ] Change in composition to 10% by mass (the synthetic resin material is 90% Corg.renew, the modern carbon ratio is 93 pMC), and the top plate of the overcap (2) of the binding piece (3a) In the vicinity of the end (3a ₁ ) having a linear shape connected to the portion (2a), as a recess (3a ₁₁ ) on the surface on the side continuous with the outer surface of the top plate (2a) of the overcap (2) Depth of 90 μm [about 16% with respect to the cross-sectional thickness (550 μm) of the region where the cross-sectional thickness is thinner than the other region (specifically, the main part) in the vicinity of the end (3a ₁ ) of the coupling piece (3a) It corresponds to the groove depth. A cap having a toggle structure containing a plant-derived polyolefin was integrally molded by injection molding in the same manner as in Example 1 except that the shape of the groove provided with a semicircular linear groove was changed. .

  After removing the cap having the toggle structure formed by injection molding from the mold, the overcap (2) is swung, and the cap having the toggle structure containing the plant-derived polyolefin is closed, When heat-fixed by heat treatment at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For a cap having a toggle structure containing a plant-derived polyolefin after heat setting, an operation of swinging the overcap (2) with respect to the cap body (1) and then swinging from the open state to the closed state is performed 50 When repeated, the pleasant click feeling was maintained and the click feeling was determined to be good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Example 5]
Changes in the composition of the plant-derived polyethylene 58% by mass and the fossil fuel-derived polyethylene 42% by mass (the synthetic resin material is 58% Corg.renew, and the modern carbon ratio is 60 pMC). Except for this, a cap having a toggle structure containing a plant-derived polyolefin was integrally molded by injection molding in the same manner as in Example 4.

  After removing the cap with a toggle structure containing the plant-derived polyolefin molded by injection molding from the mold, the overcap (2) is swung to bring the cap with the toggle structure into a closed state. When heat-fixed by heat treatment at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For the cap having a toggle structure containing the plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the lid is opened. When the operation of swinging from the state to the closed state was repeated 50 times, it was determined that a pleasant click feeling persisted and the click feeling was good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Reference example]
The plant-derived polyethylene was not blended, but the blending change was made by using the fossil fuel-derived polyethylene alone (the synthetic resin material is 0% Corg.renew, and the modern carbon ratio is 0 pMC). In the same manner as in Example 1, a cap having a toggle structure was integrally formed by injection molding.

  After the cap having the toggle structure formed by injection molding is taken out of the mold, the overcap (2) is swung to heat the cap having the toggle structure closed at a temperature of 40 ° C. for one week. When heat fixed, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
About the cap provided with the toggle structure after heat setting, the elevation angle in the opened state was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For the cap having the toggle structure after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then is swung from the open state to the closed state. When the operation to repeat was repeated 50 times, it was determined that a pleasant click feeling persisted and the click feeling was good. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Comparative Example 1]
Change in the composition of fatty acid amide (A) having an unsaturated cis structure carbon double bond to 5500 ppm with respect to plant-derived polyethylene, and connection with the top plate (2a) of the overcap (2) Except for a change in the shape in which a straight groove having a semicircular cross section with a depth of 110 μm was not provided (that is, the groove depth was 0 μm) in the region in the vicinity of the straight end (3a ₁ ) to be used, Example 1 In the same manner as described above, a cap having a toggle structure containing a plant-derived polyolefin was integrally formed by injection molding.

  A cap having a toggle structure containing a plant-derived polyolefin molded by injection molding is taken out of the mold, and then the overcap (2) is swung to form a toggle structure containing a plant-derived polyolefin. When the cap provided was closed and heat-set at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For the cap having a toggle structure containing the plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the lid is opened. When the operation of swinging from the state to the closed state was repeated 50 times, a slightly stronger click feeling was felt. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

[Comparative Example 2]
The fatty acid amide (A) having an unsaturated cis structure carbon double bond corresponds to the trans-9,10-octadecenoamide [trans structure of the unsaturated fatty acid amide of the formula (A ₁ ). The cap with a toggle structure containing a plant-derived polyolefin in the same manner as in Comparative Example 1 except that the composition was changed to (single use) and the composition was adjusted to 2000 ppm with respect to the plant-derived polyethylene. Was integrally molded.

  A cap having a toggle structure containing a plant-derived polyolefin molded by injection molding is taken out of the mold, and then the overcap (2) is swung to form a toggle structure containing a plant-derived polyolefin. When the cap provided was closed and heat-set at a temperature of 40 ° C. for 1 week, no distortion of the shape was observed.

[Evaluation of elevation angle in the open state]
The elevation angle in the open state of the cap having a toggle structure containing the plant-derived polyolefin after heat setting was determined. The results are shown in Table 1.

[Click feeling evaluation and chute clogging evaluation]
For the cap having a toggle structure containing the plant-derived polyolefin after heat setting, the overcap (2) is swung from the closed state to the open state with respect to the cap body (1), and then the lid is opened. When the operation of swinging from the state to the closed state was repeated 50 times, a slightly stronger click feeling was felt. In addition, Table 1 shows the result of the chute clogging evaluation for the cap having this toggle structure.

From the results of Table 1, caps having a toggle structure containing the plant-derived polyolefins of Examples 1 to 5, that is, plant-derived, in which the modern carbon ratio defined in ASTM D6866-11 is 56.7 to 118 pMC A cap integrally formed from polyethylene or a synthetic resin material containing 130-4000 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond and containing plant-derived polyethylene and fossil fuel-derived polyethylene A toggle structure (3) for connecting the overcap (2) to the main body (1), the overcap (2), and the cap main body (1) so as to be swingable between a closed state and an open state. It is a cap with a toggle structure that contains a plant-derived polyolefin and is integrally molded from a synthetic resin material. And
The toggle structure (3) includes a bendable coupling piece (3a) that rotatably supports the overcap (2) with respect to the cap body (1), and a coupling piece (3a) along the rotation axis of the overcap. ) And a pair of support members (3b) disposed on both sides of the two, the coupling piece (3a) includes both end portions (3a ₁ , 3a ₂ ), and the both end portions (3a ₁ , 3a ₂ ) , An end portion connected to the outer peripheral surface of the cap body (1) and the top plate portion (2a) of the overcap (2), and connected to the inside of the periphery of the top plate portion (2a) of the overcap (2) ( 3a ₁ ) only in connection with the top plate part (2a) of the overcap (2) and in the vicinity of the end part (3a ₁ ) connected to the top plate part (2a) of the overcap (2) It has an area with a thinner cross-sectional thickness and an overcap ( In regions sectional thickness thinner than other regions in the vicinity of the top plate portion (an end portion connected to the 2a) (3a ₁₎ of), the top plate portion of the overcap (2) on the side connected to the outer surface of (2a) Contains a plant-derived polyolefin integrally molded from the synthetic resin material of Examples 1 to 5 having a linear groove having a semicircular cross section with a depth of 110 μm or 90 μm as the recess (3a ₁₁ ) on the surface The cap with the toggle structure is
i) has carbon offset,
ii) It does not contain plant-derived polyethylene, and has a shape stability that does not cause shape distortion by injection molding and heat treatment, as well as a cap having a toggle structure of a reference example made of polyethylene derived from fossil fuel,
iii) Since the elevation angle in the open state is 159 to 171 °, it is close to the horizontal open state, and a pleasant click feeling is continuously obtained, so it has excellent snapping properties and the evaluation of shoot clogging is “◯” In the process of attaching the cap to the container, it has been found that the transportability of the cap supply is good.

On the other hand, it contains plant-derived polyethylene with a modern carbon ratio of 104 pMC, but in both cases, the toggle piece (3) connecting piece (3a) is connected to the top plate (2a) of the overcap (2). In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion (3a ₁ ) to be formed, a recess (3a ₁₁ ) is provided on the surface of the overcap (2) that is continuous with the outer surface of the top plate portion (2a). In addition, a cap having a toggle structure integrally molded from the synthetic resin material of Comparative Example 1 containing a large amount of fatty acid amide (A) having an unsaturated cis structure carbon double bond at 5500 ppm, and The cap having a toggle structure integrally formed from the synthetic resin material of Comparative Example 2 that does not contain the fatty acid amide (A) having an unsaturated cis structure carbon double bond has an elevation angle of 14 in the open state. There is a gap between 4 and 145 ° and the horizontal open state, and there is a strong click feeling, and the evaluation of the clogging of the chute is “×”, and the cap supply transportability is good in the process of attaching the cap to the container. It turns out that it is not.

The present invention relates to a cap body that is attached to the mouth and neck of a container, an overcap that covers the top of the cap body, and an overcap that is swingably connected to the cap body between a closed state and an open state. A cap integrally molded from a synthetic resin material containing a polyolefin having a toggle structure and a polyolefin having a modern carbon ratio of 56.7 to 118 pMC as defined in ASTM D6866-11. To c):
a) The toggle structure includes a bendable coupling piece that rotatably supports the overcap with respect to the cap body, and a pair of support members disposed on both sides of the coupling piece along the rotation axis of the overcap. Have;
b) The coupling piece is
b-1) It is provided with both ends, and the both ends are connected to the outer peripheral surface of the cap body and the top plate of the overcap,
b-2) Only at the end connected to the inside of the periphery of the top plate of the overcap, the top plate of the overcap is connected.
b-3) In the vicinity of the end portion connected to the top plate portion of the overcap, there is a region where the cross-sectional thickness is thinner than other regions,
And,
b-4) In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion connected to the top plate portion of the overcap, the surface on the side continuous with the outer surface of the top plate portion of the overcap has a recess; and
c) The toggle structure is made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond;
A toggle structure integrally formed from a synthetic resin material containing a fossil fuel-derived polyolefin having carbon offset by being a cap having a toggle structure containing a plant-derived polyolefin. The cap has a moldability comparable to that of the cap, the overcap can be maintained in a stable open state, the elevation angle in the open state is sufficiently large, and snapping, durability and operability are good. A cap having a toggle structure integrally formed from a synthetic resin material containing a plant-derived polyolefin and having a good transportability in cap supply in the step of attaching the cap to the container is provided. Because it can, industrial applicability is high.

1: cap body 1a: screw part 2: the overcap 2a: top plate portion of the overcap 3: Toggle Structure 3a: connection piece _3a 1, _3a 2: end _{3a 11:} recess 3b: support 4: spout D: Cap support device (delivery device)
b: container c: cap d: cap supply means e: capper f: gripper h: horizontal offset v: vertical offset

Claims (16)

Cap body attached to mouth / neck of container, overcap covering top of cap body, and toggle structure for connecting overcap to cap body so as to be swingable between closed state and open state A cap formed integrally from a synthetic resin material containing a polyolefin derived from a plant, including a polyolefin having a modern carbon ratio of 56.7 to 118 pMC as defined in ASTM D6866-11, comprising: a) to c):
a) The toggle structure has a bendable coupling piece that rotatably supports the overcap with respect to the cap body, and a pair of support members disposed on both sides of the coupling piece along the rotation axis of the overcap. ;
b) The coupling piece is
b-1) It is provided with both ends, and the both ends are connected to the outer peripheral surface of the cap body and the top plate of the overcap,
b-2) Only at the end connected to the inside of the periphery of the top plate portion of the overcap, it is connected to the top plate portion of the overcap,
b-3) In the vicinity of the end portion connected to the top plate portion of the overcap, there is a region where the cross-sectional thickness is thinner than other regions,
And,
b-4) In a region where the cross-sectional thickness is thinner than other regions in the vicinity of the end portion connected to the top plate portion of the overcap, the surface on the side continuous with the outer surface of the top plate portion of the overcap has a recess; and
c) The toggle structure consists of a synthetic resin containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond;
A cap having a toggle structure containing a plant-derived polyolefin.   The toggle containing the plant-derived polyolefin according to claim 1, wherein the cap body, the overcap and the toggle structure are made of a synthetic resin material containing 100 to 4500 ppm of fatty acid amide (A) having an unsaturated cis structure carbon double bond. Cap with structure. The fatty acid amide (A) having an unsaturated cis structure carbon double bond is represented by the following (A ₁ ), (A ₂ ) and (A ₃ ):
(A ₁ ) H ₂ N—CO — (— CH ₂ —) _n —CH═CH — (— CH ₂ —) _n —CH ₃ (where n is an integer in the range of 6 ≦ n ≦ 10);
(A ₂ ) H ₂ N—CO — (— CH ₂ —) _m−2 —CH═CH — (— CH ₂ —) _m —CH ₃ (where m is an integer in the range of 6 ≦ m ≦ 10) And (A ₃ ) H ₂ N—CO — (— CH ₂ —) _{k + 4} —CH═CH — (— CH ₂ —) _k —CH ₃ (where k is an integer in the range of 6 ≦ k ≦ 10); ;
The cap provided with the toggle structure containing the polyolefin derived from the plant of Claim 1 or 2 containing the at least 1 sort (s) of fatty acid amide represented by one formula chosen from the group which consists of these. The fatty acid amide (A) having an unsaturated cis structure carbon double bond is represented by the fatty acid amide represented by the formula (A ₁ ) and the formula (A ₂ ) or (A ₃ ). A cap comprising a toggle structure containing a plant-derived polyolefin according to claim 3, which is a mixture with at least one fatty acid amide. M in fatty acid amides of the formula of the above (A ₂₎ is, contains polyolefin derived from a plant according to claim 4 wherein the m = n + 1 or m = n-1, the cap comprising a toggle structure. The cap provided with a toggle structure containing a plant-derived polyolefin according to claim 4, wherein k in the fatty acid amide represented by the formula (A ₃ ) is k = n. The fatty acid amide (A) having an unsaturated cis-structure carbon double bond is a fatty acid amide represented by the above formula (A ₁ ), and the following (A ₁₁ ):
(A ₁₁ ) H ₂ N—CO — (— CH ₂ —) _j —CH═CH — (— CH ₂ —) _j —CH ₃ (where j is an integer in the range of 6 ≦ j ≦ 10, j ≠ n.);
A cap having a toggle structure containing the plant-derived polyolefin according to claim 4, which is a mixture with a fatty acid amide represented by the formula:   The fatty acid amide (A) having an unsaturated cis-structure carbon double bond contains a compound having 2 to 4 bonds of unsaturated cis-structure carbon double bonds in the molecular structure. A cap comprising a toggle structure containing the plant-derived polyolefin according to Item.   The synthetic resin material containing the fatty acid amide (A) having an unsaturated cis structure carbon double bond further contains the plant-derived polyolefin according to any one of claims 1 to 8, further containing a saturated fatty acid amide. Cap with toggle structure.   The plant-derived polyolefin is a plant-derived ethylene-based resin, and a cap having a toggle structure containing the plant-derived polyolefin according to any one of claims 1 to 9.   A cap provided with a toggle structure containing the plant-derived polyolefin according to any one of claims 1 to 10, wherein the binding piece has a substantially L-shaped contour shape.   A cap provided with a toggle structure containing the plant-derived polyolefin according to any one of claims 1 to 10, wherein the binding piece has a curved contour shape.   The cap having a toggle structure containing the plant-derived polyolefin according to any one of claims 1 to 12, wherein the recess is a linear groove.   The plant-derived polyolefin according to claim 13, wherein the linear groove is a groove having a depth in the range of 5 to 30% with respect to the cross-sectional thickness of the region having a thinner cross-sectional thickness than the other region. A cap with a toggle structure.   A cap provided with a toggle structure containing the plant-derived polyolefin according to claim 1, wherein the toggle structure has two or more binding pieces.   A cap having a toggle structure containing the plant-derived polyolefin according to any one of claims 1 to 15, which is heat-set in a closed state.

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