CN213324140U - Multilayer bottle blank and bottle with ceramic texture - Google Patents

Abstract

The utility model provides a multilayer bottle base and bottle with pottery feel, the wall of this multilayer bottle base is two-layer structure at least, including skin and inlayer, the skin of being made by first material is the stratum lucidum, and the inlayer of being made by the second material that is different from first material is light tight layer, and inlayer and outer thickness ratio range are 1: 1.5 ~ 1: 2.3. The bottle formed by the multilayer bottle blank through the blow molding process has the advantages of being light-tight, avoiding the influence on the product quality caused by the irradiation of light on some special bottled products, having ceramic texture and being more attractive compared with the existing plastic bottle.

Description

Multilayer bottle blank and bottle with ceramic texture

Technical Field

The utility model relates to a multilayer plastic container especially relates to a multilayer bottle base and bottle with ceramic feel.

Background

With the rapid development of plastic injection and blow molding technologies, plastic bottles are widely used, especially in the beverage industry. In order to highlight the particularity and significance of the product, many beverage manufacturers add various colors, such as blue, light blue, green, and other single-layer structure bottles or multi-layer bottles with gradually changed colors, to the material for manufacturing the bottle blank for blow molding under the premise of ensuring various filling performance requirements of the beverage bottle, so that the product is visually attractive in appearance and impressive to consumers. In the single layer bottle 10 'shown in fig. 1, the wall of the preform has only one layer 1', which is the most common plastic bottle structure, and if it is desired to add color to the single layer bottle, the plastic material is added with pigment. A bottle 10 'of multilayer structure, as shown in fig. 2, having a wall 1' with 3 layers of structure, an outer layer 11 ', an intermediate layer 12', and an inner layer 13 ', respectively, wherein the outer layer 11' and the inner layer 13 'are plastic layers and the intermediate layer 12' is a colored layer, can be produced into a bottle of a graded color which is more aesthetically pleasing than a bottle of single layer structure.

However, the existing plastic bottles cannot meet the requirements of dairy products, which are in a variety of varieties, especially UHT-treated milk, pasteurized milk and various yoghurts, wherein some vitamins (e.g. E vitamins), proteins and fats are degraded by light, while the existing plastic bottles are mostly transparent or translucent, and the original nutritional characteristics of the dairy products packaged by the existing plastic bottles are reduced after several days, so that the original taste and nutrition cannot be maintained.

SUMMERY OF THE UTILITY MODEL

For solving the problem that prior art exists, the utility model provides a multilayer bottle base and bottle with pottery feel, it can block light, guarantees that the product quality in the bottle does not receive the influence of light, and has pottery feel, has promoted the pleasing to the eye degree of plastic bottle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multilayer bottle blank with ceramic texture is characterized in that the wall of the multilayer bottle blank is of at least two-layer structure and comprises an outer layer and an inner layer, the outer layer made of a first material is a transparent layer, the inner layer made of a second material different from the first material is an opaque layer, and the thickness ratio of the inner layer to the outer layer ranges from 1: 1.5 to 1: 2.3.

Furthermore, the weight of the outer layer accounts for 60-70% of the total weight of the bottle blank, and the weight of the inner layer accounts for 30-40% of the total weight of the bottle blank.

Further, the outer layer is a transparent plastic layer, and the first material adopted by the outer layer is selected from PET, PP and PETG.

Further, the material of the inner layer is a mixed material of the material used by the outer layer and color master, and the color master accounts for 5-20% of the specific weight of the mixed material.

Further, the color master is selected from a gorgeous porcelain imitation, a glomus light inhibitor and a dutch color light inhibitor.

The utility model discloses still provide a bottle with ceramic feel, through carrying out blow molding to foretell multilayer bottle base.

Further, the bottle has a total light transmittance of 1% or less at a wavelength of 400nm or less.

Further, the bottle has a total light transmittance of 10% or less at a wavelength of 400 to 600 nm.

The utility model discloses a multilayer bottle base and bottle have following beneficial effect:

(1) the bottle blank and the bottle are provided with the light-tight layers, so that visible light can be prevented from transmitting, the original taste and nutritional characteristics of special bottled products (such as dairy products) sensitive to light are ensured, and the influence on the product quality caused by the irradiation of the light on the products is avoided;

(2) the structural design and the material design of the bottle blank enable the surface of a plastic bottle formed by blow molding to be bright, the light transmission is weak, the reflectivity is strong, the ceramic texture is shown, and the plastic bottle is more attractive compared with the existing plastic bottle.

Drawings

The invention will be further described and illustrated with reference to the accompanying drawings.

FIG. 1 is a schematic view of a prior art bottle preform with a single layer structure.

Fig. 2 is a schematic view of a prior art bottle preform having a multi-layer structure.

Fig. 3 is a schematic view of a multilayer bottle preform having a ceramic texture according to a preferred embodiment of the present invention.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic view of the refraction and reflection of light by the bottle with ceramic texture according to the present invention.

FIG. 6 is a graph showing the measurement of the light transmittance of the bottle.

Fig. 7 is a schematic view of a multilayer preform of another shape according to the present invention.

Detailed Description

The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 3 and 4, the multilayer bottle preform 10 having a ceramic texture according to the preferred embodiment of the present invention has at least a two-layer structure, and the wall 1 of the multilayer bottle preform includes at least an outer layer 11 and an inner layer 12 from the outside to the inside of the multilayer bottle preform 10.

The outer layer 11 is made of a first material, which forms the outer layer 11 as a transparent layer. Preferably, the first material is polyethylene terephthalate (PET). It will be appreciated by those skilled in the art that the first material may also be polypropylene (PP), polyethylene terephthalate-1, 4-cyclohexanedimethanol (PETG).

The inner layer 12 is made of a second material, different from the first material, and the inner layer formed of the second material is an opaque layer. The second material is a mixed material of the outer layer material (namely the first material) and color masterbatch, and the weight proportion of the color masterbatch accounts for 5-20% of the weight proportion of the whole second material. The color master is selected from Huarun porcelain imitation, glomus light blocker (LACTRA), dutch color light blocker or other high-brightness color master. The color master batch has the main functions of: the base color of the whole bottle blank is determined, the final color of the bottle blank and the bottle is determined, and the light blocking effect is achieved. Because the color master batch can not be used as a molding material independently, the color master batch is mixed with a first material (PET, PP and PEGT), the first material is used as a carrier of the color master batch, and the color master batch and the first material can be plasticized and molded after being mixed, and then the injection molding process is carried out. The proportion of the color master is different according to different colors, and the darker the color is, the stronger the light resistance is, and the lower the proportion of the color master is. However, the effect of the utility model can not be achieved when the proportion of the color master is too high or too low, and if the proportion of the color master is too low, the refraction and reflection effect of the inner layer to the light is poor, namely, the light resistance is not strong, the effect of light-tightness can not be achieved, and the texture effect of the ceramic glaze color can not be achieved; if the proportion of the color master is too high, in the injection molding process of the bottle blank, a screw rod is easy to slip so as to influence plasticizing storage and generate bubbles, so that the whole process has high energy consumption, poor controllability and high color master cost. Therefore, the utility model discloses a 5% ~ 20% of the shared whole second kind material weight ratio of look female can avoid aforementioned harmful effects well, has both had the effect of hindering light, has ceramic feel again, and the technological process controllability is good, and is with low costs.

The utility model discloses a shaping mode that multilayer bottle base adopted the multilayer to annotate altogether because the material of outer 11 and inlayer 12 is different, consequently, when moulding plastics, outer 11 and inlayer 12 have different sources of moulding plastics.

The utility model discloses except carrying out research and development ratio to the material of each layer of bottle base, also studied and designed each layer thickness of bottle base. As shown in fig. 4, in the present invention, the thickness W1 of the outer layer 11 is greater than the thickness W2 of the inner layer 12, i.e., W2 < W1.

Specifically, the thickness ratio between the outer layer thickness W1 and the inner layer thickness W2 is 1: 1.5-1: 2.3, preferably 1: 1.85. The weight of the outer layer 11 accounts for 60 to 70 percent of the total weight of the whole bottle blank, and is preferably 65 percent; the weight of the inner layer 12 is 30% to 40%, preferably 35%, of the total weight of the entire preform.

The above-described multi-layer preform 10 is formed into a plastic bottle having a non-light-transmitting effect and a ceramic-like appearance through a blow molding process.

Such as the light propagation path shown in fig. 5. When the light L1 irradiates the outer surface of the bottle (i.e. the outer surface of the outer layer 11), a part of the light is reflected back to form a reflected light L2, another part of the light enters the outer layer 11 to be refracted to form a refracted light L3, in the refraction process, a part of the refracted light L3 is absorbed by the outer layer 11, another part of the light reaches the interface between the outer layer 11 and the inner layer 12 to be reflected and refracted to form a reflected light L4 and a refracted light L5, and a reflected light L4 returns to the air again, so that the reflection effect of the light is enhanced, and the visible angle of the light is widened. Refracted ray L5 gets into inlayer 12, and in the refraction process, a part of refracted ray L5 is absorbed by inlayer 12, and another part takes place the refraction again, forms refracted ray L6, and refracted ray L6 after 3 refractions is very weak, so makes the luminousness of bottle very little, and the light resistance is stronger.

The utility model discloses set outer 11 to thicker, because outer (stratum lucidum) is thicker, feel is stronger more, and surface refraction astigmatism effect is better, and refraction light makes the visual angle of light wider after the reflection of inlayer 12, therefore can obtain better refraction and reflection effect. The inner layer 12 should be as thin as possible while ensuring light blocking, which is advantageous for the operability of the apparatus and controllability of the process on the one hand, and for better economy on the other hand.

As shown in fig. 6, the abscissa represents the wavelength of the irradiation light, the ordinate represents the transmittance, and the test objects are a T sample bottle and a Z sample bottle, wherein the inner layer of the T sample bottle contains 20% of the china-like pigment master, and the inner layer of the Z sample bottle contains 4% of the galois light-blocking agent master.

According to above-mentioned luminousness test result, the utility model discloses a bottle is below 10% to the full gloss light transmittance that the most sensitive wavelength of human eye is 400 ~ 600nm, is below 1% to the full gloss light transmittance that the wavelength is below 400 nm. According to the test result, the bottle using the Carlos light retardant as the color master has better light resistance, and the total light transmittance of the bottle with the wavelength of 400-600 nm is less than 5%.

Based on the multilayer structure of above-mentioned bottle base, each layer material, the design of each layer thickness, make the utility model discloses a plastic bottle has bright, the reflectivity is strong, the light-tight characteristic in surface to demonstrate the outward appearance of ceramic feel, and the light-tight characteristic can effectively avoid adorning the product quality in the bottle not influenced by the light.

The multi-layer preform of the present invention is suitable for various shapes of preforms and plastic bottles, and is not limited to the preform shape shown in the above-mentioned preferred embodiment of fig. 3. As shown in fig. 7, which shows another shape assumed by the multi-layered preform of the present invention, in this embodiment, the multi-layered preform 20 is substantially cylindrical, and the wall 2 of the preform has the same two-layer structure as the above-described preferred embodiment, i.e., an outer layer 21 and an inner layer 22.

In other embodiments, the utility model discloses a multilayer bottle base can also be 3 layer structure or more layer structures, and multilayer structure's outmost is the stratum lucidum that the PET material was made, and the inlayer adopts the mixed material of PET material and look mother to make, forms non-euphotic layer, and the number of piles of non-euphotic layer is more, and is stronger to the ability that blocks of light, and consequently, the number of piles of non-euphotic layer can be set for according to actual demand.

The above detailed description merely describes the preferred embodiments of the present invention and does not limit the scope of the present invention. Without departing from the design concept and spirit scope of the present invention, the ordinary skilled in the art should belong to the protection scope of the present invention according to the present invention provides the text description and drawings to the various modifications, replacements and improvements made by the technical solution of the present invention. The scope of protection of the present invention is determined by the claims.

Claims (5)

1. A multilayer bottle blank with ceramic texture is characterized in that the wall of the multilayer bottle blank is of at least two-layer structure and comprises an outer layer and an inner layer, the outer layer made of a first material is a transparent layer, the inner layer made of a second material different from the first material is an opaque layer, and the thickness ratio of the inner layer to the outer layer ranges from 1: 1.5 to 1: 2.3.

2. A multi-layered preform having a ceramic texture as claimed in claim 1, wherein the weight of the outer layer is 60 to 70% of the total weight of the preform, and the weight of the inner layer is 30 to 40% of the total weight of the preform.

3. A bottle having a ceramic texture, which is obtained by blow molding the multilayer bottle preform according to any one of claims 1 to 2.

4. A bottle having a ceramic texture as set forth in claim 3, wherein the bottle has a total light transmittance at a wavelength of 400nm or less of 1% or less.

5. A bottle having a ceramic texture according to claim 4, wherein the bottle has a total light transmittance at a wavelength of 400 to 600nm of 10% or less.

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