CN105121149B

CN105121149B - The ribbing membrane structure of the visual characteristic formed with space agent

Info

Publication number: CN105121149B
Application number: CN201480018873.3A
Authority: CN
Inventors: M·G·博哈特; T·J·菲什; 肯尼思·西赛克; R·T·多尔西
Original assignee: Glad Products Co
Current assignee: Glad Products Co
Priority date: 2013-03-15
Filing date: 2014-03-14
Publication date: 2017-12-08
Anticipated expiration: 2034-03-14
Also published as: WO2014143889A1; HK1212300A1; CN105121149A; CA2903554A1; CA2903554C; AU2014228109A1; AU2014228109B2

Abstract

In an example embodiment, a kind of film includes a coextrusion structure, and the coextrusion structure has：An extrusion ribbing top layer and a sandwich layer including multiple ribs.These ribs with a net of these ribs one by being spaced apart.The film is additionally included in the space agent in these ribs on the top layer.

Description

The ribbing membrane structure of the visual characteristic formed with space agent

Related application

The application is related to the following U.S. Patent application submitted on the same day with the application：The visual characteristic formed with pigment Ribbing membrane structure (RIBBED FILM STRUCTURES WITH PIGMENT CREATED VISUAL CHARACTERISTICS), Reference Number 492.1116；And the discontinuous laminate film structure with improved visual characteristic (DISCONTINUOUSLY LAMINATED FILM STRUCTURES WITH IMPROVED VISUAL CHARACTERISTICS), Reference Number 492.1120.In addition, the application, which is submit on April 24th, 2012 entitled, has vision The thermoplastic film of upper different stretch zones and method (the THERMOPLASTIC FILMS WITH for manufacturing the film VISUALLY-DISTINCT STRETCHED REGIONS AND METHODS FOR MAKING THE SAME) the U.S. it is special The part of sharp patent application serial numbers 13/454,412 continues (CIP) and requires the priority of this application, this application requirement 2011 4 The entitled thermoplastic film with visually different stretch zones and the method for manufacturing the film that the moon is submitted on the 25th (THERMOPLASTIC FILMS WITH VISUALLY-DISTINCT STRETCHED REGIONS AND METHODS FOR MAKING THE SAME) U.S. Provisional Patent Application Serial No. 61/478,639 priority.The application or 2012 4 The entitled multilayer film with visually different region that the moon is submitted on the 24th and the method (MULTI-LAYER for manufacturing the film FILMS WITH VISUALLY-DISTINCT REGIONS AND METHODS OF MAKING THE SAME) the U.S. it is special The part of sharp patent application serial numbers 13/454,474 continues (CIP) and requires the priority of this application, and this application requires in April, 2011 The entitled multilayer film with visually different region submitted for 25th and the method (MULTI-LAYER for manufacturing the film FILMS WITH VISUALLY-DISTINCT REGIONS AND METHODS OF MAKING THE SAME) the U.S. face When patent application serial number 61/478,643 priority.The application or submitted July 18 within 2012 entitled by not Continuous laminating has multilayered fold film (the MULTI-PLY PUCKERED FILMS FORMED BY that the film of different rebound degrees is formed DISCONTINUOUS LAMINATION OF FILMS HAVING DIFFERENT REBOUND RATIOS) United States Patent (USP) The part of patent application serial numbers 13/552,352 continues (CIP) and requires the priority of this application, and is October 25 in 2012 Entitled thermoplastic multilayered film (the THERMOPLASTIC MULTI-PLY FILM WITH with metal appearance that day submits METALLIC APPEARANCE) the part of U.S. Patent Application Serial Number 13/660,844 continue (CIP) and require the Shen Priority please, and be the entitled discontinuous laminated film (DISCONTINUOUSLY submitted on November 16th, 2010 LAMINATED FILM) the part of U.S. Patent Application Serial Number 12/947,025 continue (CIP) and require this application Priority.All above-mentioned applications are accordingly integrally joined to this by this reference with it.

Background

Due to the hope that the influence that the cost of resin material increases and made resin material to waste minimizes, manufacturer is intended to The resin film of thickness (gauge) more and more thinner is used in their product.Resin for realizing high power capacity in a variety of manners It is especially true for the manufacturer of film (such as the resin film for being used in storage product and reject product use).Although thinner thickness Material can represent obvious cost savings for manufacturer, but conventional production mechanism may imply that using thinner thickness Film precursor causes the durability of final products relatively low.Although some state-of-the-art technologies can at least produce intensity and its in some cases The relatively thin product of the same thickness of thicker homologue, but customers feel the material of thinner thickness according to previous experience naturally The quality and durability of material are relatively low.

For relatively low on the sack quality and durability instantly prompting of customer, still the sack is not felt Thick or thin degree, and be the thin or weak degree of the sack " seeming ".In general, customer tends to regard translucence Make an instruction of relatively low strength.Therefore, despite the fact that being that some Conventional mechanisms can still use the film of thinner thickness Improve some aspects of film-strength while material, but the translucence of such sack tends to so that customer believes the sack still It is so low-quality.Manufacturer can attempt this to minimize by adding colouring agent or space agent (voiding agent) Problem overcomes this kind of difficulty.

However, depending on their usage, colouring agent and space agent can weaken the chemical bond in the film sometimes, and Form a kind of weaker film.In addition, the challenge of uniqueness is there may be using some colors in a kind of film or membrane structure.For example, Film with white colour can use the pigment such as titanium dioxide (TiO2).However, titanium dioxide is fairly expensive and can be significantly Increase uses the cost of the film of this pigment.Other Conventional mechanisms are related in a kind of laminar structure very small using multiple thickness Film, at least one wherein in these films be colored.However, the color addition of the above-mentioned type and the class of membrane structure to film Type is typically not suitable for some applications and/or had proven to due to a variety of causes in addition to those indicated above Problem.

For example, a kind of laminar structure of color changeable (or " laminate ") includes a pair of films intimate contact with one another, and Further comprise producing film adjacent to a color of a positioning in these films., should as long as these films are intimate contact with one another Laminate just produces a kind of interference colour.However, in the case of close contact is not present between these films, color is not produced.Cause This, the laminate of the color changeable may be not particularly suitable for for example using in the environment of layering of these films is likely to occur.In addition, Production process for this structure can be difficult, and in some cases it was necessary to strictly be controlled to ensure Close contact in whole laminated films.

Another laminate shows a kind of color change in the lamination plate benging.This is using being arranged on the laminate A kind of color on one film produces metal to complete.The metal and an anode film are in close contact, and pass through the interference of light Sink effect and produce color.If it is in close contact however, being not present between the metal and the anode film, then cannot be real These existing colors produce effect.In addition, production process can be difficult, and in some cases it was necessary to strictly controlled Make to ensure the close contact between the metal and all parts of the anode film.Similarly, this laminate may be less Suitable for following environment：The use of metal be undesirably or it is unpractiaca；The layering of the metal and the anode film is impossible 's；And/or although the geometry of the laminate there occurs temporary transient or permanent change, it is still desirable to maintain the laminate Color.

As last example, another laminar structure can be configured in two films layering intimate contact with one another Show a kind of irreversible color change.If however, closely initial contact is not present between these films, then cannot Realize that these colors produce effect.Therefore, production process must strictly be controlled close between these films to ensure Contact, so that when these films are layered, realize desired effect.Similarly, this laminate may be not particularly suitable for Lower environment：Although there occurs temporary transient or permanent change for the geometry of the laminate, it is still desirable to maintains the laminate Color.Finally, this laminar structure can must user intervention be used to realize necessary to irreversible color change point to reach Layer.

It is proposed the needs for high-quality final products be present as discussed above, no matter its of their outward appearances and/or sense of touch How is his aspect, and these products are structured to provide an affirmative indication on those product qualities to customer.

Example embodiment is sketched

One or more embodiments within the scope of the present invention can in terms of one or more of this area shortcoming is overcome To be effective.In an example embodiment, a kind of film includes a coextrusion structure, and the coextrusion structure is multiple with including One extrusion ribbing top layer of rib and a sandwich layer.These ribs with a net of these ribs one by being spaced apart.The film also wraps Include substantially more transparent than in the net a kind of space agent in these ribs, so that the face between these ribs and the net A contrast on color and/or color intensity is visible.

Previous embodiment only provides by way of example, and is not intended to be limiting in any manner the scope of the present invention.One Ground is caused, the one kind with a ribbing outer layer that there is disclosed herein within the scope of the present invention extrudes multilayer film, discontinuous lamination Various other embodiments of membrane structure and associated production process.

Brief Description Of Drawings

Accompanying drawing include example embodiment figure so as to further show and illustrate the present invention various aspects.It will be appreciated that this A little figures simply depict the example embodiment of the present invention and are not intended to be limiting in any manner the scope of the present invention.By using Accompanying drawing, each aspect of the present invention will be described and explained with extra specificity and details, in the accompanying drawings：

Fig. 1 discloses each side of an extrusion mould-outlet as can be used to form an extrusion ribbing film layer；

Fig. 2 a disclose each side of a MD machine and associated MD rolling process；

Fig. 2 b are a detailed view of Fig. 1 MD machines, and disclose operation of the MD machines relative to a film Each side；

Fig. 2 c are to show that by an instrument (a such as annular roller) (be in this case one in a part for a film Individual rib) on form another detailed view of mark；

Fig. 2 d disclose some illustrated section ribbed shapes and arrangement；

Fig. 3 discloses each side of an exemplary method for producing an extrusion multilayer film；

Fig. 4 a-1 and Fig. 4 a-2 depict first example of a film, are referred to herein as film ' A ', wherein Fig. 4 a-1 and The film in Fig. 4 a-2 is a non-stretching film；

Fig. 4 b-1 and Fig. 4 b-2 depict one first change of film ' A ', and wherein the film is in a machine direction by looping mill rolling；

Fig. 4 c-1 and Fig. 4 c-2 disclose another description of first change of film ' A ', and wherein the film is in machine side Upwards by looping mill rolling；

Fig. 4 d-1 and Fig. 4 d-2 depict one second of film ' A ' change, and wherein the film is first in a machine direction simultaneously And then in a lateral direction by looping mill rolling；

Fig. 5 a-1 and Fig. 5 a-2 depict second example of a film, are referred to herein as ' B ', wherein Fig. 5 a-1 and figure The film in 5a-2 is a non-stretching film；

Fig. 5 b-1 and Fig. 5 b-2 depict one first change of film ' B ', and wherein the film is in a machine direction by looping mill rolling；

Fig. 5 c-1 and Fig. 5 c-2 depict one second of film ' B ' change, and wherein the film is first in a machine direction simultaneously And subsequent looping mill rolling in a lateral direction；

Fig. 6 a-1 and Fig. 6 a-2 depict the 3rd example of a film, are referred to herein as film ' C ', wherein Fig. 6 a-1 and The film in Fig. 6 a-2 is a non-stretching film；

Fig. 6 b-1 and Fig. 6 b-2 depict one first change of film ' C ', and wherein the film is in a machine direction by looping mill rolling；

Fig. 6 c-1 and Fig. 6 c-2 depict one second of film ' C ' change, and wherein the film is first in a machine direction simultaneously And then in a lateral direction by looping mill rolling；

Fig. 7 a-1 and Fig. 7 a-2 depict the 4th example of a film, are referred to herein as film ' H ', wherein Fig. 7 a-1 and The film in Fig. 7 a-2 is a non-stretching film；

Fig. 7 b-1 and Fig. 7 b-2 depict one first change of film ' H ', and wherein the film is in a machine direction by looping mill rolling； And

Fig. 7 c-1 and Fig. 7 c-2 depict one second of film ' H ' change, and wherein the film is first in a machine direction simultaneously And then in a lateral direction by looping mill rolling.

Embodiment

The example embodiment of the present invention relates generally to extruded film.More specifically, at least some embodiments are related to and had The extruded film of the appreciable one or more visions of user and/or tactile elements, and other embodiment be related to for produce it is such The method of film.As long as such film can be used for constructing such as the structure of discontinuous laminate film structure, such film after the formation thereof It is referred to as precursor film in this can.These films disclosed here can be used in a variety of final products, these final productions The example of product includes but is not limited to, groceries bag, refuse bag, paper bag, yard waste bag, packaging material, feminine hygiene, baby Diaper, adult incontinence productses, sanitary napkin, bandage, food storage bag, food storage container, hot wrappage, facial mask, cleaning piece and Hard surface cleaning thing.

A. each side of various example embodiments

It should be pointed out that embodiment disclosed here does not form the exhaustive overview of be possible to embodiment, and below Also the full list for all aspects for not forming any specific embodiment is discussed.On the contrary, some examples are only presented in following discussion The selected aspect of embodiment.It should also be noted that any content in this should be construed as forming any invention or reality Apply a necessary or indispensable element of example.On the contrary, and as one of ordinary skill in the art will readily appreciate that, institute Disclosing the various aspects of embodiment can combine to limit other embodiment in a variety of ways.Such other embodiment is considered as In the range of present disclosure.Equally, all embodiments in the range of present disclosure should be construed as solving any Particular problem or the solution for being limited to any particular problem.Such embodiment also should not be construed as realizing any one or it is more Individual specific effect or the implementation for being limited to any one or more specific effects.

Film in the range of present disclosure can have or show a variety of physics, vision and/or optical characteristics.These Vision and/or optical characteristics can produce the feelings of laminate, layering and/or membrane structure bending without using such as metal level, color Realized under condition.

The illustrative example for the effect (such as visual appearance) that can show in the various embodiments of a film includes：With more One co-extruded films of individual layer, the multiple layer include a ribbing outer layer, wherein these ribs and the net between these ribs Between color and/or a contrast on color intensity be obvious；With a ribbing including a kind of space agent One film of outer layer；A film with a ribbing outer layer including a kind of stress sensitive space agent；With without coloring One film of one ribbing outer layer of agent and an internal layer without colouring agent；With including one of multiple white ribs and colourless net One film of outer layer and an internal layer without colouring agent；With an outer layer including multiple black ribs and colourless net and be free of One film of one internal layer of colouring agent；With an outer layer including multiple white ribs and black net and black internal layer One film；And with an outer layer for including multiple black ribs and white net and further comprise the one of a white internal layer Individual co-extruded films.

It should be pointed out that above-mentioned rib, net and layer color are to provide by way of example.Thus, for example, the internal layer and outer Layer needs not be black or white, but any colouring agent for the outward appearance that may include can to assign or produce any other color and/ Or space agent.In general, it can use and provide a visual contrast between these ribs and these nets of a ribbing layer Any one or more colors of degree.

As considered as foregoing being proposed, film and associated product in the range of present disclosure can include following Any appropriate combination of one or more of item：A sandwich layer with a kind of colouring agent；A sandwich layer without colouring agent； A top layer including a kind of space agent；A top layer without colouring agent；One ribbing top layer；Include a kind of space agent A ribbing top layer；A ribbing top layer comprising a kind of stress sensitive space agent；One including a kind of colouring agent adds Rib top layer；A ribbing top layer without colouring agent；One in two or more coextruded layers, wherein these layers is one Sandwich layer, and one in these layers is a top layer；One in two or more coextruded layers, wherein these layers is one Individual sandwich layer, and one in these layers is a ribbing top layer for having multiple ribs, between the color of these ribs and these ribs The color of net be contrasted；Two in three or more coextruded layers, wherein these layers are in top layer and these layers A sandwich layer being located between these top layers；One in two or more coextruded layers, wherein these layers It is a sandwich layer, and one in these layers is a ribbing top layer；In three or more coextruded layers, wherein these layers Two be top layer, a sandwich layer being located between these top layers in these layers, and one in these top layers Individual is ribbing；One in two or more coextruded layers, wherein these layers is a sandwich layer, and one in these layers Individual is a top layer, and the sandwich layer and the top layer are free of colouring agent；An extruded film with a ribbing top layer, the extrusion Film includes suture, line of discontinuity, coloring rib and has a kind of one or more of rib of metal appearance；With a ribbing table One extruded film of layer, the extruded film have one or more marks of the extrusion post processing of the extruded film；With a ribbing One extruded film on top layer, the extruded film have one or more marks of the extrusion post processing of the extruded film；Add with one One extruded film on rib top layer, the extruded film include at least in part as extrusion post processing caused by one or more visions and/ Or tactile elements；An extruded film with a ribbing top layer, the extruded film are included at least in part by extrusion post processing production Raw one or more visions and/or tactile elements, these visions and/or tactile elements include suture, line of discontinuity, coloring rib With with a kind of one or more of rib of metal appearance；An extruded film with a ribbing top layer, the extruded film bag One or more visions and/or tactile elements as caused by one or both of MD looping mill rollings and TD looping mill rollings at least in part are included, And these visions and/or tactile elements include suture, line of discontinuity, colour rib and with one in a kind of rib of metal appearance It is individual or multiple, and, include a kind of final products of any one in the combination of aforementioned layers or those layers.

Will be appreciated that from other disclosure contents foregoing and in this can limit a variety of embodiments.It is set forth below Some examples of such embodiment.Such embodiment is not intended to be limiting in any manner the scope of the present invention.

In first example embodiment, a kind of multilayer film of extruding includes a ribbing table with the rib by net connection Layer, wherein these nets and rib are integral with one another.

In second example embodiment, one kind extrusion multilayer film includes a ribbing top layer and a sandwich layer.

In the 3rd example embodiment, one kind extrusion multilayer film include a sandwich layer and a pair of top layers, wherein these One or two in top layer is ribbing.

In the 4th example embodiment, a kind of multilayer film of extruding includes a sandwich layer and has a kind of space agent One ribbing top layer.

In the 5th example embodiment, a kind of multilayer film of extruding includes a sandwich layer and tool with a kind of colouring agent There is an a kind of ribbing top layer of space agent.

In the 6th example embodiment, one kind extrusion multilayer film includes a sandwich layer and with a kind of stress sensitive sky One ribbing top layer of gap agent.

In the 7th example embodiment, an extrusion multilayer film includes a sandwich layer and a ribbing top layer, wherein It is contrasted in terms of one or two of net in color and color intensity between these ribs and these ribs on the ribbing top layer.

In the 8th example embodiment, one kind extrusion multilayer film includes a sandwich layer and a ribbing top layer, wherein These ribs on the ribbing top layer include a kind of space agent, and the net between these ribs is essentially colorless.

In the 9th example embodiment, one kind extrusion multilayer film includes a sandwich layer and a ribbing top layer, wherein The sandwich layer be colourless or black in one kind, and the ribbing top layer be colourless or white in one kind.

In the tenth example embodiment, a kind of extrusion multilayer film including ribbing top layer has the one of extrusion post processing Individual or multiple marks, one or more mark is can be by one or more sensory perceptions' of user.

In the 11st example embodiment, a kind of extrusion multilayer film including ribbing top layer has extrusion post processing One or more mark, wherein extrusion post processing is one or both of MD looping mill rollings and TD looping mill rollings.

In the 12nd example embodiment, a kind of extrusion multilayer film including ribbing top layer has extrusion post processing One or more mark, wherein these marks are present on these ribs on the ribbing top layer.

In the 13rd example embodiment, a kind of extrusion multilayer film including ribbing top layer has extrusion post processing One or more mark, and these marks include a kind of color and a net of a kind of visible deformation of a rib, rib A kind of one or more of color.

In the 14th example embodiment, a kind of extrusion multilayer film including ribbing top layer has extrusion post processing One or more mark, wherein these marks pass on the information of a relative intensity on the film.

In the 15th example embodiment, a kind of extrusion multilayer film including ribbing top layer has extrusion post processing The application of one or more mark, wherein stress and/or strain of these mark instructions on these ribs on the ribbing top layer.

In the 16th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included outside a ribbing Layer is coextruded together with a sandwich layer.

In the 17th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included outside a ribbing Layer is coextruded together with a sandwich layer, and makes the extrusion multilayer film be subjected to including the MD looping mill rollings and TD rings performed in any order The extrusion post processing one or both of rolled.

In the 18th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included a kind of colouring agent Be added in one or two in a ribbing outer layer and a sandwich layer, and by the ribbing outer layer together with the sandwich layer co-extrusion Go out.

In the 19th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included outside a ribbing Layer is coextruded together with a sandwich layer, and wherein the ribbing outer layer includes a kind of space agent.

In the 20th example embodiment, a kind of method for being used to be formed extrusion multilayer film includes：By a kind of space Agent is added on a ribbing outer layer and a kind of colouring agent is added on a sandwich layer, by the ribbing outer layer and the sandwich layer one Play coextrusion；And the extrusion multilayer film is set to be subjected to including MD looping mill rollings and one kind in TD looping mill rollings or two performed in any order The extrusion post processing of kind.

In the 21st example embodiment, a kind of method for being used to be formed extrusion multilayer film includes：One is added Rib outer layer is coextruded together with a sandwich layer, and wherein the sandwich layer does not have colouring agent and the ribbing outer layer includes a kind of space Agent；And the extrusion multilayer film is set to be subjected to including squeezing for the MD looping mill rollings that perform in any order and one or both of TD looping mill rollings Go out post processing.

In the 22nd example embodiment, a kind of method for being used to be formed extrusion multilayer film is included a ribbing Outer layer is coextruded together with a sandwich layer, and by being subjected to the extrusion multilayer film to include the MD looping mill rollings performed in any order Post-processed with the extrusion of one or both of TD looping mill rollings.

In the 23rd example embodiment, a kind of method for being used to be formed extrusion multilayer film includes colouring one kind Agent is added on a sandwich layer, and the ribbing outer layer is coextruded together with the sandwich layer, and by being subjected to the extrusion multilayer film Post-processed including the extrusion of the MD looping mill rollings performed in any order and one or both of TD looping mill rollings.

In the 24th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included a ribbing Outer layer is coextruded together with a sandwich layer, and wherein the ribbing outer layer includes a kind of space agent and the sandwich layer does not have colouring agent, And the MD looping mill rollings by being subjected to the extrusion multilayer film to include to perform in any order and one or both of TD looping mill rollings Extrusion post processing.

In the 25th example embodiment, a kind of method for being used to be formed extrusion multilayer film is included a ribbing Outer layer is coextruded together with a sandwich layer, and makes the extrusion multilayer film be subjected to including the MD looping mill rollings and TD performed in any order The extrusion post processing of one or both of looping mill rolling, and the extrusion multilayer film obtained by this shows these ribs and these nets and is somebody's turn to do A contrast in color and/or color intensity between one or more of sandwich layer.

In other example embodiments, any one in above-mentioned extrusion multilayer film includes one or more LLDPE layers.

In other example embodiments, a kind of discontinuous laminate film structure includes any in above-mentioned extrusion multilayer film It is individual.

In other example embodiments, a kind of final products include above-mentioned extrusion multilayer film or discontinuous laminate film structure In any one.

In other example embodiments, any of above method is used to produce in whole or in part one kind including above-mentioned The final products of any one in film and/or discontinuous laminate film structure.

For this disclosure and the purpose of claim, term " rib " is included on a surface of a given precursor film A part for additional resins, the part are an integral parts of the film, and are that any subsequent thermal or cold is performed on the film Before forming process (a such as looping mill rolling process)." rib " of one ribbing film (such as reference 250 in Fig. 2 a) is (such as in Fig. 2 a Reference 251) can be passed through according to the implementation of the present invention via molten resin with for forming one group or more of respective rib Organize the extrusion of an appropriate die orifice of groove and formed.Similarly, for the purpose of present specification and claims, one " ribbing film " refers to such a film：The film is extruded into one or more ribs in molten form, and is therefore included Independently of can after initial extrusion/formation of one or more ribs of the ribbing film via any other heat or cold forming One or more extrusion ribs of any other striped caused by journey or rib-like structure.From subsequent forming process it is such other Line or rib-like structure are commonly referred to as " one or more ripples " herein.For example, see Fig. 2 a and Fig. 2 b reference 258.

In terms of the physical configuration of one " rib ", the scope of the present invention be not limited to it any concrete form, size or Orientation.However, in general, these ribs stretch out a segment distance from a surface of the film.In this structure, a net limit It is scheduled between continuous rib.These ribs may or may not have the section of a general triangular, but it is to be understood that, example Such as, an extrusion mould-outlet can be configured to a rib of the production with any desired cross sectional shape.

B. multilayer film is extruded

As contemplated herein, multilayer film and the extrusion for producing multilayer film include, except other things, two or The coextrusion that more resin beds pass through a heating die orifice.The extrusion post processing of the multilayer film may include for example in machine direction (MD) and be generally normal in the horizontal direction (TD) of the MD one or two on looping mill rolling.As used herein, term " machine Device direction " or " MD " refer to, along the direction of the length of the film, or in other words, refer to the shape in extrusion and/or coating procedure Into the direction of the film during film.Similarly, term " horizontal direction " or " TD " refer to across the film or perpendicular to machine direction Direction.In addition, term " diagonal " or " DD " refer to the direction do not alignd with the length or width of the film.Finally, One " coextrusion " film refers to a film with two or more layers being coextruded each other.

C. example membrane material

These films disclosed here may include any flexible or pliable material, including can form or pull into the thermoplastic of a film Property material.As described above, at least some films within the scope of the present invention include one or more of multiple layers, these layers Can be thermoplastic.As needed, adjunct also is included in these film layers.Such appendicular example includes smooth Agent, antitack agent, tackifier, colouring agent (such as pigment, dyestuff, dilution pigment), space agent and foregoing appendicular a variety of groups Close.

The thermoplastic of the film of one or more implementations can include but is not limited to：TPO, including Polyethylene, polypropylene and its copolymer.Besides the ethylene and the propylene, exemplary copolymers alkene includes but is not limited to ethene second Vinyl acetate (EVA), ethylene methyl acrylate (EMA) and ethylene acrylic (EAA), or the blend of such alkene.

Being suitable as other examples of the polymer of the film according to the present invention includes elastomer polymer.Suitable elastomer Polymer can also be biodegradable or environmentally degradable.Suitable elastomer polymer for the film includes poly- (Ethylene/Butylene), poly- (polyethylene-hexene), poly- (ethylene-octene), poly- (ethylene-propylene), poly- (styrene-butadiene-benzene second Alkene), SIS, poly- (styrene-ethylene-butylene-styrene), poly- (ester-ether), poly- (second Ether-amide), poly- (ethane-acetic acid ethyenyl ester), poly- (ethylene-methyl acrylate), poly- (ethylene-acrylic acid), poly- (ethylene-propylene Acid butyl ester), polyurethane, poly- (ethylene/propylene/diene), ethylene-propylene rubber and foregoing every combination.

D. the general aspect of some example production process

Consistent with the heterogeneity of film, various processes and combinations thereof can be used for the life of these films disclosed here In production.The example of this class process includes but is not limited to, extrusion, hot adhesion, ultrasonic bonding, adhesives, increment stretching, pressure Power bonding technology (such as machine direction (MD) looping mill rolling, horizontal direction (TD) looping mill rolling, diagonal (DD) looping mill rolling, and cause shape Into any looping mill rolling process of a laminated film with strainable network).It can be used to using the processing of a corona discharge Strengthen any one of above method.

More generally however, say, any one or more other processes for producing multilayer film, and the model of the present invention can be used Enclose and be not limited to any one or more specific production processes.

Consistent with present disclosure, manufacturer can form the independent film for needing to be coextruded together so as to the various skills of use Art provides improved strength characteristics.For example, manufacturer can form one of the thermoplastic comprising any optional additive Kind precursor mixture.Then manufacturer can use conventional flat film extrusion, casting films extrusion or co-extrusion to be mixed by the precursor Thing forms one or more films, to produce the film of individual layer, coextrusion bilayer or multilayer.As routine flat film extrusion or The alternative solution of casting films extrusion, manufacturer can form these using other suitable processes (such as blowing membrane process) To produce individual layer, bilayer or the film of multilayer, these films are then discontinuously laminated film in latter stage and another film layer Together.If given final use needs, manufacturer can be by capturing bubble, tenter or other appropriate mistakes Journey orients these films.In addition, manufacturer can optionally make these films anneal.

In the case of using extruding, manufacturer can supply different melting stream using multiple extruders, and one is entered Material block can force these melting streams to enter in the different passages of a multichannel die orifice.This multiple extruder can allow to manufacture Business forms a kind of multilayer film of the layer different including multiple compositions.Such multilayer film with itself can be able to be or can not be later Another film layer of multilayer is discontinuously laminated together, to provide a kind of discontinuous laminate film structure.

During a blown film, the die orifice can be a perpendicular cylinder with a circular open, and The die orifice may include multiple geometric properties on its inner surface, when the molten plastic is extruded by the die orifice, these geometry Feature can form various structures on the film.As disclosed elsewhere herein, an example of this geometric properties is One group of tusk being arranged on around the inner surface of the die orifice, when the molten plastic passes through the die orifice, this group of tusk can cause Make to form multiple ribs on the film.One example of this die orifice is disclosed and carried out in further detail below in Fig. 1 Discuss.

With continued reference to the blowing membrane process, roller can pull up the plastics of melting away from the die orifice.When film travels upwardly, one Individual air ring can cool down the film.One air outlet slit can compel to allow compressed air into the center of extruded circular contour, from And produce bubble.Air can make extruded circular cross-section expand more times of the die diameter.This ratio can be referred to as " blow-up ratio " or BUR.When using membrane process is blown, manufacturer can collapse the film to make the number of plies of the film double.Can Alternatively, manufacturer can cut and fold the film or cut and the not folded film.

The various particular instances of production process in the production that this elaborates available for film disclosed here elsewhere More detail discussion.

E. example production equipment

Guide notice into Fig. 1 first, there is provided on the details of each side of a machine 50, the machine can be used to shape Into coextruded multilayer film, as in this disclosure those.Due to this machine and general aspect of its operation herein elsewhere Illustrate, so following description relates generally to one of a multilayer film for extruding the multiple ribs being included at least one layer Machine and process.

In brief, machine 50 may include the one or more die orifices for being configured to receive molten plastic stream, such as die orifice 52.Die orifice 52 limits the annulus 54 that the molten plastic passes through or extruded.Annulus 54 can substantially circular shape, but this be not must Need and can use with other shapes annulus 54.In the case of 54 substantially circular shape of annulus, annulus 54 limits A fixed internal diameter 56, the internal diameter have the size that selection can be carried out according to the requirement of a concrete application.In some examples In, the inner surface 58 of annulus 54 can be substantially smooth and not any discontinuities or other geometric properties, and annulus 54 outer surface (this example is not shown) can be same, but this is not required.In this example, die orifice 52 can produce A film layer with a substantially smooth outer surface.

However, in other instances, the inner surface 58 of annulus 54 can be substantially smooth and without any discontinuities Or other geometric properties, and the outer surface 59 of annulus 54 may include one or more elements 60, one or more elements are by structure Make and be arranged so that the element with outer surface 59 is taken in the outer surface of the extrusion film layer when the molten plastic passes through die orifice 52 60 configuration a structure and outward appearance corresponding with arrangement.In the example of fig. 1, element 60 includes having a substantially U The groove of shape configuration, and element 60 essentially homogeneously separates around outer surface 59, so that produced by die orifice 52 An extruded film include a ribbing outer surface, the ribbing outer surface has the multiple ribs for example extended in a machine direction, But it can also produce the rib oriented with other directions.In general, the configuration of the ribbing outer surface will reflect size, the number of element 60 Amount, shape and spacing.In the case where element 60 includes multiple grooves, these grooves can have sharp or circular bottom simultaneously And can all substantially the same sizes or different sizes.

Although element 60 in the example of fig. 1 includes multiple grooves, element 60 can have any other desired knot Structure.Therefore, the scope of the present invention is not limited to outer surface structure and outward appearance with the example die orifice 52 corresponding to Fig. 1 Ribbing extruded film.In addition, although example annulus 54 indicated in Fig. 1 includes a substantially smooth inner surface and one adds Rib outer surface, it is to be understood that, it can be produced using various types of annulus or functionally suitable structure with particular characteristics Film, and the scope of the present invention be not limited to as can as caused by annulus 54 film.In order to illustrate, can use in its inner surface or Include an annulus of element 60 (such as rib) on outer surface, to produce the ribbing on both sides film.As another Individual example, can use includes in its inner surface but does not include an annulus of element 60 on its outer surface, has to produce One outer surface of relative smooth and include one of an inner surface of multiple features as caused by element 60 (such as rib) Film.

With reference now to Fig. 2 a and Fig. 2 b, there is provided on the details of each side of a machine 150, the machine can be in a film It is used for producing one or more of ribbing film disclosed here in the extrusion post processing of (such as film 250).

Initially on film, exemplary films 250 can be an extrusion multilayer precursor films and may include material disclosed here Any one of.For example, film 250 can envelope two or more layers, a sandwich layer being such as positioned between two top layers.This Kind film 250 can be for example in whole or in part by being extruded into.In addition, at least one in these top layers may include to squeeze by this Go out multiple ribs 251 of process formation, that is, extrude rib.As indicated by Fig. 2 a, rib 251 may be generally parallel to the machine direction Extension, but this is not required in that.Extrusion is not yet subjected to post-process and with least one layer of film for including such rib 251 250 can be referred to as a ribbing precursor film herein.

Under any circumstance, film 250 can have one limited by the distance between its top 254 and lower surface 256 Individual original depth or initial thickness 252.In at least one embodiment, initial thickness 252 and each layer of dimension can be with It is substantially uniform along the length of film 250.

Now concerning machine 150, Fig. 2 a and Fig. 2 b disclose some of a machine 150, and the machine can realize one Individual MD looping mill rollings process, the process can apply indicia on film 250 and/or so that mark is appeared on film 250.It should be understood that It is that a MD looping mill rolling process is an instantiation of a MD drawing process.Other in addition to MD looping mill rollings can be used Process come realize MD stretch.As it is discussed in further detail below, it is such mark may include such as star, point, discontinuities, suture and Any other physics and/or visual indicia caused by being handled by the MD of film 250.More specifically, it is such mark may include by Caused by physical contact between some (such as rib 251) of the MD machines and/or other post-processor for extruded devices and film 250 Mark, and additionally or alternatively such mark may include color, the color strengthened and by film 250 such as by machine 150 Stretching caused by other effects.

In Fig. 2 a and Fig. 2 b example, machine 150 includes a pair of MD intermeshing Hes of roller 152 that film 250 is passed through 154.Due to MD looping mill rollings, film 250 intermittently stretches on machine direction MD, and/or some (such as ribs of film 250 251) can be subjected to due to the physical contact between those parts of film 250 and the element of machine 150 (such as roller 152 and/or roller 154) Stress and/or strain.

On their configuration, Fig. 2 a, which disclose the first roller 152 and the second roller 154, can each have a generally cylinder The shape of shape, and be operable in the opposite direction around corresponding parallel rotation axis 152a and 154a rotation, these axles Line can be substantially parallel to horizontal direction TD and be essentially perpendicular to machine direction MD.Roller 152 and 154 each includes phase The multiple radially projecting spines 156 and spine 158 answered, these spines are along corresponding roller 152 and roller 154 to be substantially parallel to Rotation axis 152a and 154a direction extension.Spine 156 and the corresponding sophisticated 156a of spine 158 and sophisticated 158a can have A variety of different shapes and configuration, including as shown in Figure 2 b round-shaped.In the implementation of replacement, spine 156 and ridge The sophisticated 156a and sophisticated 158a in portion 158 can have acute corners.As further indicated in Fig. 2 a and Fig. 2 b, spine 156 is logical Groove 160 is crossed to separate, and spine 158 is separated by groove 162.

Spine 156 and spine 158 are to interlock relative to each other, so that when roller 152 and roller 154 engage each other When groove 160 can receive at least a portion of spine 158.Correspondingly, groove 162 can receive at least a portion of spine 156. In at least some examples, spine 156 and spine 158 and the configuration of groove 160 and groove 162 can hinder during intermeshing The only substantial contact between spine 156 and spine 158, so that transmit few rotation torque in operation or do not pass Defeated rotation torque.In addition, spine 156 and spine 158 and the configuration of groove 160 and groove 162 can pass through roller 152 in film 250 With the amount of tension that the film is influenceed during roller 154.

With continued reference to Fig. 2 a and Fig. 2 b, the spacing and depth of engagement of spine 156 and spine 158 can determine at least in part The amount that the increment as caused by these intermeshing rollers 152 and roller 154 stretches.As shown in Figure 2 b, spacing 164 is on same roller The distance between the tip of two adjacent ridges.Depth of engagement (DOE) 166 is in intermeshing process central roll 152 and roller 154 Adjacent ridges 156 and spine 158 between lap.

Such as from foregoing teachings it will be apparent that the various parameters of machine 150 can according to it is expected the effect that reaches selecting and Realize.For example, spine's spacing and/or DOE can be varied depending on.However, merely because these parameters and other specification can To change, such change will be needed not be for the ordinary skill in the art it will be apparent that and at least at some In example, only it can be drawn in lot of experiments and after attempting.

As indicated by Fig. 2 a and Fig. 2 b, it is generally that film 250, which passes through the direct of travel of intermeshing roller 152 and roller 154, Parallel to machine direction and it is essentially perpendicular to horizontal direction.When film 250 is worn between intermeshing roller 152 and roller 154 It is out-of-date, spine 156 and spine 158 incrementally stretched film 250 in a machine direction.In one or more implementations, in machine Device side is pulled up the length that film 250 can reduce the thickness of the film and increase the film 250.In other implementations, film 250 can restore after being stretched, so that the thickness of film 250 will not significantly reduce.In addition, realized in one or more In scheme, stretched film 250 can reduce the width of the film 250 in a machine direction.For example, when film 250 in a machine direction by During lengthening, the width of film 250 may be reduced on the horizontal direction.

Specifically, and such as Fig. 2 b are best shown, when film 250 is advanced between intermeshing roller 152 and roller 154 When, the spine 156 of the first roller 152 can shift film 250 onto in the groove 162 of the second roller 154, and the spine 158 of the second roller 154 Also film 250 can be shifted onto in the groove 160 of the first roller 152.The pulling of spine 156 and spine 158 to film 250 can be with stretched film 250.However, roller 152 and roller 154 need not be evenly stretched the film along the length of film 250.Specifically, roller 152 and roller 154 The amount of tension of the part between spine 156 and spine 158 of film 250 can be made more than film 250 and spine 156 and spine The amount of tension of the part of 158 contacts, as indicated by Fig. 2 b.

Therefore, roller 152 and roller 154 can cooperate to form a series of ripple 258 of machinings in film 250, so make Film 250 includes and the alternate relatively thick part of relatively thinner part.As indicated by Fig. 2 a, in this instantiation Ripple 258 be substantially parallel to the horizontal direction setting.So in this example, ripple 258 is generally orthogonal to rib 251, but this arrangement is not required in that.Therefore, the film 250 completed can be a ripple for having multilayer or monolayer constructions Line shape film.As disclosed elsewhere herein, various desired visual effects and characteristic can pass through a multilayer of component film 250 The selection and processing of the various films of implementation are completed.

Now guide notice into Fig. 2 c, and continue to pay attention to Fig. 2 a and Fig. 2 b, there is provided on an example machine and process Each side details, the machine and process can be used for forming various marks in a film layer (a such as ribbing film layer) Note.Specifically, it can be seen that when performing a such as MD looping mill rolling process in exemplary films 250 (referring to Fig. 2 a and Fig. 2 b), Spine 156 and spine 158 can either temporarily or permanently compress some of these ribs 251.Compression unit 260 can with but need not be It is generally orthogonal to the direction of rib 251.

It should be appreciated that an example of the composition mark of compression unit 260 of rib 251, herein elsewhere to the example It is discussed more fully.Color, size, quantity, geometry and the orientation of compression unit 260 may depend on performed specific ring Roll process, roller spacing, DOE, one or more materials of the film and the colouring agent that is present in one or more film layers (such as One or more of pigment) and/or space agent.

MD looping mill rollings are adapted for will mark by the increment stretching of a film (a such as multilayer film) in a machine direction Note is applied to an example of the method on the film.TD looping mill rollings are will mark by the increment stretching of a film in a lateral direction Note is applied to another suitable method on the film.TD looping mill rollings, such as MD looping mill rollings, it can be used alone or combined in other processes Use.Although not specifically describing, a TD looping mill rollings machine and associated process correspondingly can be similar to the MD looping mill rollings Machine and associated process, however, such as in the case of a MD machine and process, these roller bags of a TD looping mill rolling machine Include multiple spines and the groove for being substantially parallel to the MD directions rather than being orthogonal to MD directions extension.Therefore, a TD ring The process of rolling can produce a corrugated membrane with the ripple for being substantially parallel to the MD directions.Similar to the situation of MD looping mill rollings, It should be pointed out that a TD looping mill rolling process is an instantiation of a TD drawing process.Its in addition to TD looping mill rollings His process also can be used to realize that TD is stretched.

Finally, Fig. 2 d disclose some illustrated sections element 60a, 60b and 60c shape (such as ribbed shape) and element combination 60d, 60e, 60f and 60g, these elements and element combination can use on the internal layer and/or outer layer of a film.Such as institute in Fig. 2 d Instruction, in the case of using these elements on internal layer and outer layer, these elements on the opposite side of the film can be basic On be in alignment with each other or relative to each other staggeredly.It should be pointed out that the scope of the present invention is not limited to those shapes.This Outside, the rib of different size and configuration can combine in a single film.

E. it is used for the instantiation procedure for forming film

Previously, it is noted that embodiments of the invention form the use that can include an extrusion.It will now pay attention to Power guides Fig. 3 into, there is provided on the details of an instantiation procedure 300, the process can be in film (these examples as mentioned herein Film) production in use.It should be pointed out that although Fig. 3 is related to the use of space agent, the colouring agent of any suitable type Alternately combined with the one or more during being illustrated in the figure to use.

E.1 it is coextruded

Instantiation procedure 300 starts at the step 302 for preparing a sandwich layer resin and a top layer resin.This can relate to make The blend for being ready for use on the top layer and/or sandwich layer thinks that extrusion is prepared.In at least some embodiments, preparation will be used for A kind of top layer blend on one or more top layers.The blend may include any other plasticity material of LLDPE or disclosed here Material.

At 304, a space agent is added at least one in the top layer blend and the core layer blend. In certain embodiments, one or more space agents are only added on the top layer resin.The space agent can be in the layer tree Fat melting before, during or after add.The space agent can be various forms, and the example includes dry powder form and molten Liquid.As discussed in more detail below, the space agent can be colourless, translucent, white or any other color.At least one In the case of a little, the space agent may include calcium carbonate (CaCO₃).However, it is such as pointed elsewhere herein, alternately use Other suitable one or more space agents and combinations thereof.

In at least some examples, calcium carbonate is an example, and the space agent can be stress sensitive.Therefore, The space agent can be for example non-stretched at one or otherwise looked like in unstressed film essentially colorless. However, the stress and/or strain that are applied on the film including the colouring agent can cause the membrane component (example including the space agent As rib) change color.Disclose one or more examples of this film elsewhere herein.In other instances, a kind of space Agent can be colourless or essentially colorless in itself, but be applied to a kind of stress in the space formed by space agent or answer Becoming can cause the resin in these space neighbouring positions to change color.

After the space agent is added to the blend, process 300 is moved to the top layer resin and sandwich layer resin It is coextruded to form the step 306 of an extrusion multilayer film.As pointed elsewhere herein, at least some embodiments provide The use of one die orifice, the die orifice is included in when the top layer resin is extruded by the die orifice forms multiple ribs on the top layer Element.

After coextrusion 306, caused extrusion multilayer film can be subjected to various types of extrusion post processings 308. In some examples, such as in the example of fig. 3, extrusion post processing is before the extrusion multilayer film and any other film are laminated Occur.In other instances, extrusion post processing is to carry out lamination process in the extrusion multilayer film and other one or more films In or perform afterwards.In more general terms, process can be held in any one or all above-mentioned junction points after one or more extrusions OK.Therefore, the scope of the present invention is not limited to the combination of process or multiple processes after any specific extrusion, and the model of the present invention Enclose and be also not necessarily limited to process the holding in any one or more specific junction points after the extrusion after the extrusion multilayer film is formed OK.

With continued reference to Fig. 3, extrusion post processing may include to stretch, the example include the MD looping mill rollings that perform in any order and One or more in TD looping mill rollings.In some example embodiments, the MD looping mill rollings perform before the TD annulars are put in prison, but this is simultaneously It is not required.In other other example embodiments, MD looping mill rollings are only performed.In more general terms, mistake after one or more extrusions Journey can include the extrusion ribbing multilayer film in one or more directions concurrently or consecutively increment stretching or other plasticity and/ Or elastic deformation.

As disclosed elsewhere herein, the extrusion post processing of the extrusion ribbing multilayer film can cause on the ribbing top layer And/or in the extrusion ribbing multilayer film elsewhere in and/or upper form various types of marks.

E.2 space agent

As pointed out earlier, can be used for being formed film disclosed here these during at least some relate generally to Two or more film layers are coextruded to form a coextruded multilayer film.It is consistent with embodiment disclosed here, Yi Zhonghuo A variety of colouring agents (such as space agent) can be added on one or more film resins before a multilayer film is coextruded. In general, except other things, space agent includes the combination of any material or material, and these materials are used to be dispersed with the sky Multiple spaces are formed in a kind of resin of gap agent or other materials or promote the formation in these spaces.Therefore, space agent has been divided Being dispersed in one of film can be included equably or other modes are arranged on the space in whole film.The appearance in such space and Concentration degree can have various influences to the outward appearance of associated film.

For example, the relatively thick part of the film can include spaces relatively more more than the thinner part of the film.Therefore, should The thicker portion of film can form obvious contrast with the thinner part of the film in terms of color and/or color intensity.As another Individual example, the thicker portion and thinner part of the film can make differential responses to the application of stress.This is probably due to those Partial relatively different physical arrangements, i.e. the thicker portion includes spaces more more than the thinner part, so that stress Application can be as pointed by some examples in this, cause thicker portion (such as rib) to change becomes in color and/or color It is stronger, and thinner part can be by little effect in terms of their color and/or color intensity.Therefore, it is incorporated into one kind One or more colors can be applied on that material by the space agent in material by various mechanisms, although the space Agent may have few or without inherent colour in itself.In other instances, space agent can have a kind of inherent colour, should Inherent colour can influence the outward appearance that the space agent is introduced in one of film.

Some examples for the space agent that can be combined to use with various embodiments of the present invention include but is not limited to：Carbonic acid Calcium, magnesium carbonate, barium carbonate, calcium sulfate, magnesium sulfate, barium sulfate, calcium oxide, magnesia, titanium oxide, zinc oxide, aluminium hydroxide, hydrogen Magnesia, talcum, clay, silica, aluminum oxide, mica, glass powder, starch and foregoing every any combinations.One Individual example can also be combined to use for the organic void agent of polystyrene with various embodiments of the present invention.These spaces At least some (such as calcium carbonate) in agent can have a kind of inherent colour (such as white), and the color will use the space Show in one film of agent.

Previously, it is noted that in an instantiation, a kind of suitable space agent includes calcium carbonate.In general, The concentration of the space agent for example can change according to following variable：A kind of layer of masterbatch will such as be used, the space will be used The material of the layer of agent or rubber master batch, the color and/or concentration of the masterbatch, and for formed one extrusion multilayer film another It whether there is other colouring agents in the resin of layer.Therefore, the scope of the present invention is not limited to any specific of the space agent Concentration or one or more concentration ranges.

However, in a particular instance, it has been found that a calcium carbonate space in the range of about 5% to about 25% Agent concentration can be used in some embodiments on a top layer.Moreover, it has been discovered that the calcium carbonate space agent be about 15% it is dense Degree is particularly useful in some embodiments on the top layer.

Finally it is pointed out that in some cases, the concentration of the space agent in a layer can be rib thickness Or the function of the thickness of the other elements of a layer or film, so that relatively thick rib can allow to use relatively low dense The space agent of degree.This can be favourable, because relatively thick rib can be realized by the amount of space agent needed for reduction Holistic cost is reduced.In addition, relatively thick rib contributes to the overall increase of the layer and film using these ribs.Correspondingly, Excessive space agent concentration may adversely affect to the structural intergrity of a film.Therefore, space agent can be carried The needs of the useful effect supplied must may be balanced with the adverse effect for the space agent for being likely to occur excessive concentration.

F. exemplary films

In general, and in the range of present disclosure, producible various films be present, and therefore it should be understood that Illustrated in figure and the embodiment of film discussed herein is presented and is not intended to simply by the mode of explanation and limits in any way The scope of the present invention processed.Exemplary films discussed below are extrusion ribbing film, and these extrusion ribbing films can be by a variety of different Mode produces, including the example extrusion and other processes set forth above.

In addition to one visually attracting outward appearance, such rib can also provide the structure of a deformation, so that It is subjected to producing mark during various looping mill rollings (RR) process (such as DD looping mill rollings, MD looping mill rollings and/or TD looping mill rollings).It is such as signified elsewhere herein Go out, variable (spacing of such as rib, DOE and/or RR teeth) can be adjusted to provide desired visual effect in the film.

F.1 exemplary films ' A '

Fig. 4 a-1 to Fig. 4 d-2 and corresponding word provide (to be referred to herein as on an example ribbing film layer laminated structure Film ' A ') details.In this instantiation, film ' A ' is include three LLDPE (LLDPE) layers one Extruded film, there is an A:B:A Rotating fields, wherein the layer ratio for three layers is about 20:60:20.That is, should Outer two layers or top layer each have about 20% thickness of the gross thickness of film ' A ', and the sandwich layer has film ' A ' total thickness One thickness of about the 60% of degree.

Fig. 4 a-1 to Fig. 4 d-2 further show the uncoloured sandwich layer and the top layer.In Fig. 4 a-1, Fig. 4 b-1, Fig. 4 c-1 In Fig. 4 d-1, the left part of the film is shown in a white background, and the right part of the film is carried on the back in a black Shown on scape, preferably to disclose the various aspects of the film.Fig. 5 a-1, Fig. 5 b-1, Fig. 5 c-1, Fig. 6 a-1, Fig. 6 b-1 and figure 6c-1 is same.In Fig. 7 a-1, Fig. 7 b-1 and Fig. 7 c-1, using only a black background.

These mils of rib average out to about 6.5 of film ' A ' are high, and the average headway extruded between rib 403 is about 0.336 English It is very little.The thickness targets of net 405 between continuously extrusion rib 403 are about 0.50 mil thick.As indicated by these figures, extrusion Rib 403 is appeared to translucent due to its relative thickness, and the net 405 between rib 403 is extruded is due to its thinness And appear to almost colourless.

First with specific reference to Fig. 4 a-1 and Fig. 4 a-2, film ' A ' one embodiment is disclosed, the embodiment, which reflects, does not deposit Handle after the extrusion, such as MD looping mill rollings or TD looping mill rollings.As illustrated, rib 403 has a hazy appearance, and in these ribs 403 Between net 405 to be substantially translucent.

Fig. 4 b-1, Fig. 4 b-2, Fig. 4 c-1 and Fig. 4 c-2, which are further disclosed, to be made by changing with a ribbing film combination Instrument and/or processing after extrusion and realize different-effect in the outward appearance and/or sensation of such as film.Such instrument and/ Or processing may include DOE, space width, odontoid and including one or more looping mill rollings in TD looping mill rollings, MD looping mill rollings and DD looping mill rollings One or more of.In order to illustrate, Fig. 4 b-1, Fig. 4 b-2, Fig. 4 c-1 and Fig. 4 c-2 are disclosed by using 200 spacing Instrument and an about 150 mil DOE MD process carry out an implementation of stretched film ' A '.Relative to Fig. 4 a-1 and figure 4a-2 non-stretched embodiment, net 405 of the MD stretching generations with a more hazy appearance with these parameters, and rib 403 do not undergo substantial variation in color or fuzziness.This is especially apparent when with reference to figure 4a-1 and Fig. 4 b-1 right-hand side, Wherein film ' A ' is arranged in a black background.In Fig. 4 c-1, specifically, it can be seen that the MD is stretching in rib 403 and produced Raw many points or star 407.

Fig. 4 d-1 and Fig. 4 d-2 disclose Fig. 4 b-1, Fig. 4 b-2, Fig. 4 c-1 and Fig. 4 c-2 embodiment and are being further subjected to Utilize the embodiment after a 40 spacing instruments and about 20 mil DOE a TD looping mill rolling process.Extra TD looping mill rolling processes Substantial variation is not produced in the fuzziness of net 405 between rib 403.Similarly, this process extrusion rib 403 or these squeeze Substantial color change is not produced in the net 405 gone out between rib 403.

F.2 exemplary films ' B '

Fig. 5 a-1 and Fig. 5 a-2 disclose another film for being referred to herein as film ' B ' in any looping mill rolling (such as TD looping mill rollings of execution Or MD looping mill rollings) before each side.Similar to film ' A ', film ' B ' is to include three LLDPE (LLDPE) layers One extrusion ribbing film laminate structures, has an A:B:A Rotating fields, wherein the layer ratio for three layers is about 20: 60:20。

In this example, the sandwich layer (or has A:B:' B ' layer of A structures) it is uncoloured, but compared with film ' A ', The top layer includes the about 20% calcium carbonate (CaCO as a kind of space agent₃) masterbatch.Such as in the case of film ' A ', film ' B ' The mil of the average out to of rib 503 about 6.5 is high, and the average headway between rib 503 is about 0.336 inch.Net 505 between rib 503 Thickness targets be about 0.50 mil thick.Fig. 4 a example instruction, in the case of no any looping mill rolling, due to CaCO₃Deposit In the thickness with rib 503, the rib 503 of film ' B ' has a fuzzy translucent appearance, and the net 505 between these ribs 503 is It is fuzzy but almost colourless.

Fig. 5 b instructions perform a MD looping mill rollings process to effect caused by film ' B '.Specifically, Fig. 5 b-1 and Fig. 5 b-2 show Go out and film ' B ' is produced after using a 200 spacing instruments and an about 150 mil DOE MD looping mill rolling process Effect.As shown in those figures, MD looping mill rollings under these parameters and subsequent film ' B ' stretching cause between these ribs 503 Net 505 relatively fuzzy outward appearance, and a kind of white being remarkably reinforced is presented in these ribs 503.Fig. 5 b-1 and Fig. 5 b-2 enter One step shows that these ribs 503 each pass through the cross pattern of each rib 503 including a white " suture " 507 or intermittently.Work as ginseng This is especially apparent when examining Fig. 5 b right-hand side, and wherein film ' B ' is arranged in a black background.It is following area to be somebody's turn to do " suture " pattern Domain：In that region, the MD rollers stress on that specific region of rib 503, so as to cause the space agent of stress sensitive React and produce along the region of the whiteness enhancing of these ribs 503.However, the film ' A ' such as in Fig. 4 a-1 to Fig. 4 d-2 In the case of, the stretching as caused by the TD looping mill rolling processes does not have such effect to the film ' B ' of the MD looping mill rollings.As more fully below Ground discussion, above-mentioned suture are the examples that caused mark can be combined with various embodiments.

It is worth noting that, Fig. 5 c-1 and Fig. 5 c-2 show that a 40 spacing instruments and about 20 mils will be being used A DOE TD process is applied to the film ' B ' after Fig. 5 b-1 and 5b-2 film.Show as is noted in the figures, that TD process is at these Significant changes are not produced in rib 503 or net 505.

F.3 exemplary films ' C '

Fig. 6 a-1 to Fig. 6 c-2 are provided on another example ribbing film, are referred to herein as film ' C ' details.In this tool In body example, film ' C ' is an extrusion ribbing film for including three LLDPE (LLDPE) layers, has an A: B:A Rotating fields, wherein the layer ratio for three layers is about 20:60:20.As begged for above in association with Fig. 4 a-1 to Fig. 5 c-2 Opinion in the case of film ' A ' and film ' B ', the mil of the average out to of rib 603 about 6.5 of film ' C ' height, and being averaged between rib 603 Spacing is about 0.336 inch.The thickness targets of net 605 between rib 603 are about 0.50 mil thick.

However, being contrasted with film ' B ', film ' C ' includes a kind of black colorant for causing rib 603 that black is presented.Specifically Say that film ' C ', which includes a uncoloured sandwich layer, (has Rotating fields A in ground:B:A layer B), dilute face although having and including one kind Material, it is that multiple top layers of about 0.5% black master batch (have structure A in this example:B:A layer A).As explanation, at this In individual and/or other embodiment, applicant have discovered that one with a concentration in the range of about 0.25% to about 3.0% Kind dilution pigment can provide acceptable result.Applicant has also been discovered that the concentration in the range of about 0.25% to about 2.0% Can be useful in some instances, and the concentration in the range of about 0.25% to about 1.0% in some instances can be especially It is useful.

With specific reference to Fig. 6 a-1 and Fig. 6 a-2, these figures disclose the film ' C ' of a non-stretched pattern, due to their thickness Black is presented in the presence of degree and the black master batch, these ribs 503.Due to its relative thinness, the net between these ribs 603 605 can appear to it is almost colourless to slightly obscuring.

However, Fig. 6 b-1 and Fig. 6 b-2 show the effect being applied to a MD drawing process on Fig. 6 a-1 and Fig. 6 a-2 film Fruit, wherein these ribs 603 are colored, but do not include using stress changes or strengthen the space agent of color in addition.The MD rings Roll using a 200 spacing instruments and an about 150 mil DOE to perform.Specifically, Fig. 6 b-1 and Fig. 6 b-2 are shown at this Some interval variant parts 607 of the film can be produced under a little parameters at the uniform point along these ribs 603 using MD stretchings, and The corresponding more hazy appearance of one of these ribs 603, but color change is not produced to these ribs 603 in addition.Similarly, net 605 It can also become fuzzyyer, but not suffer from color change in addition.A 40 spacing instruments and about 20 mils will be used in addition The film that DOE TD processes are applied to Fig. 6 b-1 and Fig. 6 b-2 does not produce recognizable change in these ribs 603 or insertion film 605 Change, as indicated by Fig. 6 c-1 and Fig. 6 c-2.As discussed in more detail below, the above-mentioned interval deformation of these ribs 603 be can be with Another example marked with reference to caused by various embodiments.

F.4 exemplary films ' H '

Fig. 7 a-1 to Fig. 7 c-2 and corresponding word provide on an example ribbing film, are referred to herein as film ' H ' Details.As indicated by those figures, film ' H ' is a ribbing film.In this instantiation, film ' H ' is to include three linearly One extruded film of low density polyethylene (LDPE) (LLDPE) layer.In this example, film ' H ' has an A:B:A Rotating fields.With In the layer ratio of three layers be about 20:60:20.

In this example, the sandwich layer includes about 6% black master batch, and these top layers include about 20%CaCO₃Masterbatch. The mil of the average out to of rib 703 about 6.5 of film ' H ' is high, and the average headway between rib 703 is about 0.336 inch.Rib 703 it Between the thickness targets of insertion film 705 be about 0.50 mil thick.

Observation to the film ' H ' in Fig. 7 a-1 and Fig. 7 a-2 shows fuzzy, gray colored rib, and between these ribs Black film.Fig. 7 a-1 and Fig. 7 a-2 sample are not subjected to any extrusion post processing., should in Fig. 7 a-1 and Fig. 7 b-2 sample The application of a MD drawing process of the sample reflection with a 200 spacing instruments at an about 150 Mill DOE, these Rib 703 has the outward appearance that a white has suture 707, and the black net 705 between these ribs 703 keeps black.Such as figure Indicated in 7c-1 and Fig. 7 c-2, such as compared with Fig. 7 b-1 and Fig. 7 b-2 film, what is performed after the MD drawing process has One TD drawing process of a 40 spacing instruments at about 20 mil DOE is to these ribs 703 or the net between these ribs 703 705 do not cause color change.

G. the example of process and produced mark after extruding

Such as will be from discussed above and exemplary films and structure it is readily apparent that be able to can be incited somebody to action using various processes to provide On being communicated to user using the information of the film and/or a final products of structure.

With reference to these processes disclosed here, including those illustrated above in Fig. 3 discussion, various physical indicators Can be produced and/or may reside in by the execution of those processes it is such during in the precursor film that uses.With foregoing teachings one Cause, and as to being illustrated in the discussion of structure, such mark can include such as multiple element, such as color, dyestuff, face below Any one combination in material, texture, rib, ripple, star, point, bar, suture, line of discontinuity and foregoing items.Such mark is not User only to a final products for example with discontinuous laminate film structure is it is clear that and can be by with regard to such mark For one or more sensory perceptions of user, such mark can also be favourable.

These marks can be formed in the various different times in the production process.For example, these marks can pass through one The extrusion of individual extrusion multilayer film post-processes to be formed.As another example, these marks can be formed as a discontinuous layer A part for journey is pressed through, in the discontinuous lamination process, an extrusion multilayer film is discontinuously in turn laminated to one or more On other individual layers.As yet another instance, mark can be in an extrusion last handling process for extruding multilayer film and one Formed in both discontinuous lamination process, it is same to extrude multilayer film discontinuously tegillum in the discontinuous lamination process It is pressed onto on other one or more layers.

Various types of marks may be present in specific final products, discontinuous laminate film structure or a precursor film. For example, a type of mark can pass on the information of the attribute on a final products to user.It is another type of Mark can be used for substantially modification or an aesthstic purpose.Foregoing and/or other kinds of mark can for example one it is single most Combined in finished product.

As explanation, mark can indicate some attributes of the final products visually and/or in tactile, such as One relative intensity of the product.Accordingly, there exist the extrusion rib of these in a precursor film to improve the precursor film strength. In addition, such extrusion rib also provides a user the film strength and/or a discontinuous laminate film structure using that film An or visible and palpable designator of the intensity of final products.

As another example, star or point in some being present in ' structure ' mentioned below are used as high local stress A white designator is caused, such as the various combinations of multiple looping mill rolling processes (such as MD looping mill rollings and/or TD looping mill rollings) can be utilized to obtain.Can Being caused with the high local stress caused by the looping mill rolling on the direction of the extrusion rib as being generally orthogonal to film at one in vain can be with A designator as the intensity on the discontinuous laminate film structure for customer, because the local stress causes white hair The raw tusk in a roller is processed at multiple points of these extrusion ribs.

In addition, formations of mark (such as local stress cause white) can be local and a variety of space agents of use and a variety of The various combinations of colouring agent (such as dyestuff, dilution pigment), various processes (such as cold MD looping mill rollings and/or TD looping mill rollings) control.It is actual On, if it is desired, such cause can be high local in vain, such as by mark (such as herein elsewhere disclosed point or star) table It is bright.In more general terms, stress sensitive colouring agent (such as some dyestuffs and pigment) and stress sensitive space agent can be at one not Used in one or more layers of continuous laminate film structure, so that these layers and/or the discontinuous laminate film structure Formation cause the changes of one or more elements including the colouring agent, so as to provide caused stress and/or strain One visual display.

As indicated above, can be substantially modifying or aesthstic in some scalar natures in the range of present disclosure. For example, the MD looping mill rollings offer of these extrusion ribs in a ribbing precursor film may be with the precursor film or associated discontinuity layer The intensity or integrality of press mold structure an almost unrelated interesting visual effect.

Finally, and on discussed above, it will be apparent that, passed on as long as marking to user on a precursor A kind of information of property of film, discontinuous laminate film structure and/or final products, it is such mark be exactly for reception and registration can by with The sample implementation of the method for the information of one or more sensory perceptions at family.Therefore, disclosed here these mark only There is provided by way of example, and alternately, can use has any other quite functional mark.

According to disclosure content in this, it should be appreciated that each embodiment of the invention can be relative to conventional structure It is favourable in a variety of ways with process.Some advantages set forth below that one or more embodiments of the invention realization can be combined Various examples.Such example need not be all present in any specific embodiment, and any instantiation is also not necessarily present in In one embodiment.Finally it is pointed out that example set forth below provides only by the mode of explanation, and not purport And also should not be construed in any way as limiting the scope of the present invention.

H. the exemplary advantages of some embodiments

Now some possible advantages on example embodiment, although temporary transient or permanent deformation, this hair occurs in the film Bright one or more embodiments still can substantially maintain their color characteristics.It is of the invention as another example One or more embodiments can realize various visual effects using non-metallic film, such as colour.As yet another instance, sheet One or more embodiments of invention can realize various visual effects in the case where producing laminate or layer without using color, Such as coloring.Such as another example again, on completed film, one or more embodiments of the invention can not need user to grasp A variety of visual effects are such as provided in the case of work by bending or being layered, such as coloured.In addition, one or more of the present invention Individual embodiment can realize desired visual effect using discontinuous laminated film, and therefore not need tight between film layer Contiguity is touched.In addition, one or more embodiments of the invention can using the multiple membrane structures for including at least one ribbing film come Realize desired visual effect.In addition, one or more embodiments of the invention can be due to including this rolling precursor film A ribbing precursor film or laminated film carry out MD rolling and/or TD rolling and realize the relative increase in intensity.This Outside, the film can visually be indicated to the user that by the mark (such as color, contrastive colours and/or distribution of color) in film or product And/or the relative intensity of a product using the film.As another example, increment drawing process disclosed here (such as As TD looping mill rollings and MD looping mill rollings) it can be favourable, surpass that not produce the routine of mark and other effects as mentioned herein continuously elongated Process.Can be favorably as one or more of a final example, embodiment disclosed here, because they use one Individual continuous process come possess or produce it is (such as applicatory) mark.Multiple conventional process, as punching press or embossing are not particularly suitable for connect Continuous mode is realized.On the contrary, multiple discrete portions of the only film can be stamped or be embossed.

The present invention can be embodied in the case of without departing from the spirit or essential characteristics of the present invention with other concrete forms.Example Such as, it is light to provide to be related to discrete (that is, discontinuous or part discontinuous) lamination for shown or described implementation Bond.In the implementation of replacement, the lamination can be continuous.For example, multiple film layer can be coextruded, so that in film Fail to provide before being similar to the above description benefit of those, these layers have the adhesion strength provided for being layered.Therefore, institute These embodiments of description should all be considered only as illustrative and not restrictive in all respects.It is all to be located at claim Change in the implication and equivalent scope of book is all encompassed within the range of claims.

Claims

1. a kind of film, including：

One co-extruded films, the co-extruded films include a ribbing top layer and a sandwich layer；And

Multiple extrusion ribs, it is the multiple extrusion rib in the ribbing top layer, wherein continuously extrusion rib pass through it is continuous with these Extrusion rib one thinner part and be spaced apart from each other；

Wherein：

The ribbing top layer includes space agent；

The sandwich layer is without the space agent；And

These extrusion ribs have the color different from these thinner parts.

2. film as claimed in claim 1, wherein the ribbing top layer and the sandwich layer all include thermoplastic.

3. film as claimed in claim 1, wherein the space agent are existed only in the ribbing top layer.

4. film as claimed in claim 3, wherein the space agent are substantially only in being obvious in these ribs on the ribbing top layer 's.

5. film as claimed in claim 1, wherein the space agent be substantially non-transparent, it is translucent and transparent in One kind.

6. film as claimed in claim 5, the wherein film further comprise a kind of colouring agent in the sandwich layer.

7. film as claimed in claim 6, the wherein colouring agent are a kind of colors different from the space agent.

8. film as claimed in claim 1, wherein a visual contrast be present between these extrusion ribs and these thinner parts Degree, and the visual contrast is at least one in the contrast in the contrast and a color intensity in a color Kind.

9. film as claimed in claim 1, wherein the space agent include one or more any combinations in the following： Calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, magnesium sulfate, barium sulfate, calcium oxide, magnesia, titanium oxide, zinc oxide, hydroxide Aluminium, magnesium hydroxide, talcum, clay, silica, aluminum oxide, mica, glass dust or starch.

10. film as claimed in claim 1, wherein the ribbing top layer are included by the mark of one or more sensory perceptibles of user Note, and wherein these are labeled as one kind in the following：

Substantially it is substantially modification；And

Indicate a kind of physical property of the film.

11. film as claimed in claim 10, wherein these marks include the one or more in the following：Multiple ripples, It is multiple extrusion ribs and multiple thinner parts with the respective color being contrasted, substantially white multiple extrusion ribs, basic Having and the discontinuities of these extrusion rib identical colors, these extrusions in multiple extrusion ribs of upper black, these extrusion ribs Having and the fuzziness in the discontinuities of these different colors of extrusion ribs or these thinner parts in rib.

12. film as claimed in claim 1, wherein the ribbing top layer are included by the mark of one or more sensory perceptibles of user Note, and wherein these marks indicate the extrusion post processing of the film, and extrusion post processing includes MD stretchings, MD looping mill rollings, TD One or more in stretching or TD looping mill rollings.

13. film as claimed in claim 12, wherein these marks include the one or more in the following：Multiple ripples, It is multiple extrusion ribs and multiple thinner parts with the respective color being contrasted, substantially white multiple extrusion ribs, basic Having and the discontinuities of these extrusion rib identical colors, these extrusions in multiple extrusion ribs of upper black, these extrusion ribs Having and the fuzziness in the discontinuities of these different colors of extrusion ribs or these thinner parts in rib.

14. film as claimed in claim 1, in addition to multiple interval compression units along each extension in these extrusion ribs.

15. film as claimed in claim 14, wherein these interval compression units extrude being uncompressed for ribs in color with these Part be different.

16. film as claimed in claim 15, wherein compression unit and the extrusion rib for offer being provided there is suture outward appearance for extruding rib.

17. a kind of thermoplastic product, it is formed as the film construction described in claim 1 at least in part, and wherein the thermoplasticity is produced Product include one kind in the following：Groceries bag, refuse bag, paper bag, packaging material, baby' diaper, adult incontinence productses, health Towel, bandage, foodstuff storage container, hot wrappage, facial mask, cleaning piece or hard surface cleaning thing.

18. thermoplastic product as claimed in claim 17, wherein the refuse bag is yard waste bag.

19. thermoplastic product as claimed in claim 17, wherein the sanitary napkin is feminine hygiene.

20. thermoplastic product as claimed in claim 17, wherein the foodstuff storage container is food storage bags.

21. a kind of film, including：

One co-extruded films, the co-extruded films include a ribbing top layer and a sandwich layer, wherein the ribbing top layer includes sky The gap agent and sandwich layer is without the space agent；And

Multiple extrusion ribs, in the ribbing top layer, the multiple extrusion rib extends the multiple extrusion rib in a first direction Through the film, wherein continuously extrusion rib is spaced apart from each other by the thinner part with these continuous extrusion rib one； And

Multiple compression units, it extends up through the film, the multiple compression in the second party perpendicular to the first direction Intersect with the multiple extrusion rib in portion；

The wherein extrusion rib that offer is provided there is suture outward appearance of the compression unit with extruding rib.

22. film as claimed in claim 21, wherein：

The part intersected with the compression unit in the multiple compression unit of these extrusion ribs has the first color；And

The part do not intersected with the compression unit in the multiple compression unit of these extrusion ribs, which has, is different from first color The second color.

23. film as claimed in claim 22, wherein these thinner parts, which have, is different from first color and described second 3rd color of color.