US20030215611A1 - Film structures and methods of making film structures - Google Patents

Film structures and methods of making film structures Download PDF

Info

Publication number
US20030215611A1
US20030215611A1 US10459686 US45968603A US2003215611A1 US 20030215611 A1 US20030215611 A1 US 20030215611A1 US 10459686 US10459686 US 10459686 US 45968603 A US45968603 A US 45968603A US 2003215611 A1 US2003215611 A1 US 2003215611A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
film structure
oriented
surface elements
oriented film
micrometers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10459686
Inventor
Jayshree Seth
Ronald Ausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/70Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
    • A61K9/7023Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22Plastics; Metallised plastics
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38Pressure-sensitive adhesives [PSA]
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00Adhesives based on unspecified macromolecular compounds
    • C09J201/02Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C09J2201/32Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups the adhesive layer comprising non-adhesive protrusions
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056Perforating lamina
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056Perforating lamina
    • Y10T156/1057Subsequent to assembly of laminae
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062Prior to assembly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062Prior to assembly
    • Y10T156/1064Partial cutting [e.g., grooving or incising]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/14Layer or component removable to expose adhesive
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457Parallel ribs and/or grooves
    • Y10T428/24587Oblique to longitudinal axis of web or sheet

Abstract

A method of making a three-dimensional film structure which film structure comprises making separable surface elements on a surface portion of a film structure and stretching the film structure to separate the separable surface elements, thereby obtaining a desired surface structure and tear properties. The separable surface elements are provided using a cut film surface.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This invention is a continuation-in-part of Ser. No. 10/016,544 which is related to U.S. patent application entitled “Tack-on Pressure Films for Temporary Surface Protection and Surface Modification” (Ser. No. 10/016,541; 3M Attorney Docket No. 56946US002), co-assigned to 3M Innovative Properties Company.[0001]
  • TECHNICAL FIELD
  • This invention relates to single or multilayer oriented film structures and processes for forming these structures. [0002]
  • BACKGROUND OF THE INVENTION
  • Oriented film structures, particularly biaxially oriented film structures, are widely used for various purposes. They are thin and strong and generally used widely as tape backings for packaging applications. [0003]
  • U.S. Pat. No. 6,063,482 discloses that a problem with oriented films is that they have low tear resistance. Biaxially oriented film, if nicked, can easily tear with little force making the film difficult to use and handle for many applications. This patent addresses the problems of low tear resistance by using a very specific polymer, namely a specific isotactic polypropylene. However, a more general approach is desirable which is applicable to all resins, which resins may provide other advantages, such as barrier properties, low cost, gloss or any other advantages inherent in the oriented polymer or blend. [0004]
  • U.S. Pat. Nos. 6,514,597 and 6,022,612 describes a further issue with oriented films in that they have high gloss. Matte finish oriented films are desirable for aesthetics or the like. Matte finishes have been obtained by using coextruded multilayer films and/or specific blend or surface treatments such as flame treatments or embossing. Alternative, more versatile methods of obtaining matte type surfaces on oriented films are continuously being sought out in the art. [0005]
  • It is desirable to develop more versatile methods of making tear resistant oriented films and/or matte finish film structures, and to provide oriented film structures suitable for a variety of applications. [0006]
  • SUMMARY OF THE INVENTION
  • One aspect of the present invention provides a method of forming an oriented film structure having controllable surface contact properties. This method comprises providing a film structure which has first and second major surfaces, partial scoring or cutting of at least one surface such that the top portion of the surface defines a plurality of separable surface elements and separating the separable surface elements across the surface of the film structure. This method forms surface elements across this first major surface of the film structure thereby creating spacings between adjacent separated surface elements, of an oriented film forming a base layer. In a preferred embodiment, both major surfaces of the film structure are partially scored or cut, preferably at angles to each other to create surface elements on both faces of the film which surface elements preferably overlap. Preferably, the surface elements are substantially continuous and overlap at an angle of from 10 to 170 degrees, preferably 45 to 135 degrees and are generally characterized by a height above the base layer of from 5 to 50 micrometers and have a width of from 100 to 1000 micrometers, preferably 100 to 500 micrometers. [0007]
  • If the cutting step includes cutting in more than one direction, this cutting results in discrete surface elements if the cuts on one surface are continuous and intersecting. However, if done on both faces of the film structure, overlapping surface elements preferably are formed. The surface elements prior to stretching have a width of 1000 microns or less, preferably 500 microns or less. [0008]
  • In another embodiment of the above method, the stretching step includes biaxially stretching the film structure. In another embodiment of the above method, the stretching step includes simultaneously biaxially stretching the film structure. Another embodiment of the present invention provides a film structure formed by the above method. [0009]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will be further explained with reference to the appended Figures, wherein like structure is referred to by like numerals throughout the several views, and wherein: [0010]
  • FIG. 1 is a perspective top view of a first embodiment film structure of the invention having separable surface elements. [0011]
  • FIG. 2 is a bottom view of a first embodiment film structure of the invention having separable surface elements. [0012]
  • FIG. 3 is a side view of a first embodiment film structure after it has been stretched to form surface elements. [0013]
  • FIG. 4 is a side perspective view of a first embodiment film structure after it has been stretched to form surface elements.[0014]
  • DETAILED DESCRIPTION OF THE INVENTION
  • The present invention concerns methods for making oriented film structures having an oriented base film layer and a plurality of surface structures on at least one major surface of the film structure creating controllable surface contact properties, topographies, surface finishes, ornamental appearances, strength and tear properties. The film structure has on at least one major surface predetermined surface elements which are formed by scoring or cutting the continuous film creating separable surface elements. The scored or cut film with predetermined separable surface elements is then stretched to separate the plurality of predetermined separable surface elements creating spacing, recesses or lands between the separated surface elements of an oriented film such that the resultant film assembly has different surface contact properties and film properties. The separable surface elements have different orientation properties than the spacings between them after stretching. [0015]
  • The stretching process generates surface features that have a controllable surface contact property. The plurality of separable surface elements are separated by stretching the film structure to achieve a desired topographical pattern. This technique makes the surface feature of the final film product predictable and easy to control. The film structure may be stretched equally along two mutually perpendicular directions (i.e., biaxial stretching) to separate the surface elements in the plane of the film. The film assembly may be stretched along two, or more than two directions, and to unequal extents in either direction, depending on the specific performance desired in the final film structure. When stretched in more than one direction, stretching in different directions may be carried out either simultaneously or sequentially. Furthermore, the film assembly may be stretched with interspersed operations. For example, the film may be stretched in one or more directions, then treated with a desirable treatment (such as heating, annealing or simply waiting), and then stretched again either in the same direction or in a different direction. In essence, any manner of stretching may be used as long as it helps to create a desirable separation of the separable surface elements as described herein. Generally, a stretch ratio of at least 1:1.05 is desired. In this disclosure, a stretch ratio of 1:X represents an amount of stretching in a certain direction where the final film length in that direction is “X” times its original length in the same direction. [0016]
  • The inventive method of stretching a film assembly having separable surface elements has several advantages. The stretching process according to the inventive method can be implemented in-line with conventional film-making equipment, and can therefore be accomplished in an integrated process and offers thin film capability. Since thin webs or films are usually difficult to manufacture (such as by casting, for example), it is more efficient to first form a thick web, then stretch the thick web and attenuate it to a desired final film thickness. Using the technique in accordance with the present invention, films that are less than 2 mil (0.0508 mm) thick, can be made. It is further possible to make films that are less than 0.5 mil (0.0127 mm) thick. [0017]
  • Another additional advantage of incorporating the invention process in-line with film lines is lower cost of production. The film manufacturing lines as used according to the present disclosure can be substantially faster than typical web or film casting and forming operations. Furthermore, film manufacturing lines in this disclosure can produce wider output rolls than most cast film processes. [0018]
  • In addition, biaxial or like film stretching may be carried out using standard film production equipment such as a conventional cast-tentered process. Cast-tentered films may be made sequentially (i.e., stretching in the machine direction followed by transverse stretching in a tenter), or simultaneously (i.e., using a simultaneous tenter). Either mechanical or electromechanical tenters may be employed towards this end. [0019]
  • Various techniques known in the art, such as solvent casting, lamination, or coextrusion, can be used to form multilayer constructions. [0020]
  • A textured film of the invention having separated surface elements and oriented film recesses can be used, for example, as a wrap that allows for good air bleed through the recesses. The film, either a single layer or multiple layer precursor web, can be scored or cut to an appropriate depth for desired textures. With either a single or multilayer film, a top portion containing separable surface elements is formed by scoring or cutting a top layer of the film. By scored, it is meant any line of weakness or separation. [0021]
  • FIGS. 1 and 2 show a perspective view of an embodiment of film structures [0022] 1 prior to stretching. The film structure 1 has a first dimension (width ‘W), a second dimension (length—as illustrated by “L” in FIG. 1) and a third dimension (thickness—as illustrated by “T” in FIG. 1) wherein the first and the second dimensions are preferably much greater than the third dimension. Either the first or second dimension could be an indefinite continuous extension. The film structure 1 has a stretchable base layer 6.
  • As shown in FIGS. 1 and 2, a layer of a film structure [0023] 5 and 15 is scored or cut through from the top and bottom to form scores or cuts 2 and 12, preferably in a series of parallel lines. The scores or cuts can be along first and second dimensions on only one surface, so that a layer on one surface is scored or cut into a grid of four-sided segments such as squares, diamonds, rectangles, parallelograms or rhombuses, each segment being mechanically isolated from its neighbors. This process creates a film having a matte appearance. Each segment therefore constitutes a separable surface element. There is no requirement for any particular manner or shape of scoring or cutting as long as the cutting generates desired separable surface elements 4 and 14, although different cutting mechanisms may have different efficiency or productivity. A blade cutter was used in the examples described herein, but any conventional method such as laser ablation or embossing may be used to sever the film layer into separable surface elements. Furthermore, there is no requirement for any particular shape or relative size of the separable surface elements 4 and 14 as long as the final film structure (stretched film) has the desired surface contact properties or other desired properties.
  • In a preferred embodiment as shown in FIGS. 1 and 2, the film structure [0024] 1 is scored or cut in a series of parallel lines 2 in one dimension or direction on a first surface of the film structure and a second series of parallel lines 12 in a second direction on a second surface of the film structure. Parallel lines can be linear or nonlinear. The directions are preferably at angles to each other so that they intersect or overlap. This intersection or overlap can be at an angle of 10 to 170 degrees; however, is preferably 45 to 135 degrees. The separable elements 4 and 14 when separated form surface elements 24 and 34 arranged in lines that reduce the surface contact of the film and increase the bulk tear resistance of the film and if an opposite surfaces of the film preferably overlap. on each surface of the film that preferably overlap. The size of the surface elements 24 and 34 formed depends on the spacing of the score lines and the degree and direction of orientation or tentering. Generally, the separated surface elements in this embodiment are substantially continuous in a predetermined direction or dimension and have a width of from 100 to 1000 micrometers, preferably from 100 to 500 micrometers where the separated surface elements comprise from about 10 to 90 percentage of the surface area of the stretched film structure, preferably 25 to 50 percent. The height of the surface elements h depends on the depth of the scoring or cutting as well as the degree of tentering or orientation. Preferably, the surface elements are 5 to 25 micrometers high with the oriented film base layer 26 thickness “T” between the separable elements being 10 to 50 micrometers thick. The film is generally stretched at an angle to the first and/or second direction of the score lines, of from about 10 to 80 degrees.
  • Variations of the scoring or cutting of the film layer [0025] 1 may be used by one skilled in the art. For example, cutting may be performed using a variety of schemes. Instead of using a cutter as described above, alternate cutting or surface weakening schemes such as a water-jet, laser-beam, rotary-die, or an embossing roll may be used. In general, water-jets and laser-beams may result in a wider cut swath than a cutter. Further, water-jets and laser-beams are best suited when the cutting direction is along the machine direction. One advantage with a laser beam is that intricate patterns such as waves, squiggles, predefined contours, etc. can be accomplished by programming the path into the laser scanning device. Alternatively, if overlapping lines of weakness are desired one of these lines of weakness could be created by alternative methods such as profile extruding grooves, embossing, etching or the like.
  • The film structure [0026] 20, when stretched constitutes an oriented thermoplastic polymer film and is prepared by methods known in the art, such as heating the polymer to a temperature near or above the softening transition temperature, followed by stretching in one or more directions. Typically, an oriented polymer film structure having separable surface elements is oriented by rapid stretching at a desired temperature to form an oriented film, followed by rapid quenching. Quenching ensures that the orientation is not lost by molecular relaxation. Orientation can occur in the direction of film motion, referred to in the art as the machine direction or the longitudinal direction. Films may be oriented in one direction only; and are referred to as uniaxially oriented films. They may also be oriented in two directions, typically orthogonal to each other, and are referred to as biaxially oriented films. The direction orthogonal to the longitudinal direction is referred to as the transverse or cross direction. Mechanical properties of oriented films vary depending upon the direction and degree of orientation. Orientation typically produces films with increased modulus, decreased elongation-at-break, increased tensile strength-at-break, and decreased tear strength.
  • Suitable orientable amorphous glassy thermoplastic polymers include acetates such as cellulose acetate, cellulose triacetate and cellulose acetate butyrate, acrylics such as poly(methyl methacrylate) and poly(ethyl methacrylate), polystyrenes such as poly(p-styrene) and syndiotactic-polystyrene, and styrene-based copolymers, vinylics such as poly(vinyl chloride), poly(vinylidene chloride), poly(vinylidene fluoride), poly(vinylidine dichloride) and mixtures thereof. Preferred amorphous glassy thermoplastic polymers include cellulose acetate, poly(p-styrene), syndiotactic polystyrene, poly(vinyl chloride), poly(vinylidene chloride), poly(vinylidene fluoride) and poly(vinylidine dichloride). [0027]
  • Suitable orientable semi-crystalline thermoplastic polymers include polyolefin homopolymers such as polyethylene and polypropylene, copolymers of ethylene, propylene and/or 1-butylene; copolymers containing ethylene such as ethylene vinyl acetate and ethylene acrylic acid; polyesters such as poly(ethylene terephthalate), polyethylene butyrate and polyethylene napthalate; polyamides such as poly(hexamethylene adipamide); polyurethanes; polycarbonates; poly(vinyl alcohol); ketones such as polyetheretherketone; polyphenylene sulfide; and mixtures thereof. Preferred orientable semi-crystalline polymers include polyethylene, polypropylene, poly(ethylene/propylene), poly(ethylene/1-butylene), poly(propylene/1-butylene), poly(ethylene/propylene/1-butylene), poly(ethylene terephthalate), poly(ethylene butyrate), poly(ethylene napthalate), and mixtures thereof. Particularly preferred are linear low density polyethylene, high density polyethylene, ultra high molecular weight polyethylene, isotactic polypropylene, blends of isotactic polypropylene and substantially syndiotactic polypropylene and blends of isotactic polypropylene and polyethylene. [0028]
  • The oriented thermoplastic polymer film structures of the invention range in thickness from about 2 to about 250 micrometers in the base film area. Preferably, they range in thickness from about 5 to about 150 micrometers, and more preferably, from about 10 to about 75 micrometers. [0029]
  • The polymers forming the invention film structure may also contain fillers, plasticizers, colorants, lubricants, processing aids, nucleating agents, antiblocking agents, ultraviolet-light stabilizing agents, and other property modifiers. Typically such materials are added to a polymer before it is made into an oriented film (e.g., in the polymer melt before extrusion into a film). Organic fillers may include organic dyes, and resins, as well as organic fibers such as nylon and polyimide fibers. Inorganic fillers may include pigments, fumed silica, calcium carbonate, talc, diatomaceous earth, titanium dioxide, carbon fibers, carbon black, glass beads, glass bubbles, mineral fibers, clay particles, metal particles and the like. Filler may be added in amounts up to about 100 parts per 100 parts of the polymer forming the oriented film. Other additives such as flame retardants, stabilizers, antioxidants, compatibilizers, antimicrobial agents (e.g., zinc oxide), electrical conductors, and thermal conductors (e.g., aluminum oxide, boron nitride, aluminum nitride, and nickel particles) can be blended into the polymer used to form the film in amounts of from about 1 to about 50 volume percent. [0030]
  • In the invention, a layered construction, also known as a multilayered film, may be used as the film structure. Such multilayered films include, for example, layers of films that are formed by co-extrusion with one or more other polymers, films coated with another layer, or films laminated or adhered together. [0031]
  • If the cuts are only in one direction on a surface of the film structure, a ribbed pattern is formed in the final oriented film structure as shown in FIGS. 3 and 4. Tandem cutting is possible where multiple cuts are made along parallel directions using multiple cutting stations in order to obtain smaller cut spacing than would be possible with just a single cut in that direction. Multiple cuttings at multiple angles on one or both surfaces of the film structure would result in other shapes such as triangles and other polygons. It is, therefore, possible to achieve a wide variety of controllable shapes and sizes of the topographical features. Intermittent cutting is also possible in one or more direction resulting in discrete zones capable of elongation surrounded by separable elements. Cutting to different depths with different cuts is also possible. [0032]
  • The present invention has now been described with reference to several embodiments thereof. The foregoing detailed description and examples have been given for clarity of understanding only. No unnecessary limitations are to be understood therefrom. All patents and patent applications cited herein are hereby incorporated by reference. It will be apparent to those skilled in the art that many changes can be made in the embodiments described without departing from the scope of the invention. Thus, the scope of the present invention should not be limited to the exact details and structures described herein, but rather by the structures described by the language of the claims, and the equivalents of those structures. [0033]
  • Test Methods
  • Tear Strength [0034]
  • The tear strength of the films of the invention were measured using an Elmendorf Tear test per ASTM D 1922. One ply or layer of film was used and 5 replicates were tested and averaged. [0035]
  • EXAMPLE 1
  • A structured oriented web was made using the following procedure. A relatively thick cast sheet was made using conventional profile extrusion apparatus. A polypropylene/polyethylene impact copolymer (C104, 1.3 MFI, Dow Chemical Corp., Midland, Mich.) pigmented with 1% of a TiO2/polypropylene concentrate (15100P, Clariant Corp., Minneapolis, Minn.), was extruded with a 6.35 cm single screw extruder (24:1 L/D) using a barrel temperature profile of 177° C.-232° C.-246° C. and a die temperature of approximately 235° C. The extrudate was extruded vertically downward through a die equipped with a die lip having a rectangular opening. After being shaped by the die lip, the extrudate was quenched in a water tank at a speed of 6.1 meter/min with the water being maintained at approximately 10° C. The resulting sheet was approximately 635 micrometers thick. The sheet was then advanced through a cutting station where the top (first) surface was score cut to a depth of 125 micrometers. A series of parallel score cuts were made at an angle of 23 degrees measured from the transverse direction of the sheet. The spacing of the cuts was 203 micrometers. The sheet was then turned over and advanced through a cutting station where the bottom (second) surface was score cut to a depth of 125 micrometers. A series of parallel score cuts were made at an angle of 23 degrees measured from the transverse direction of the sheet. The spacing of the cuts was 203 micrometers. The scored sheet was then biaxially stretched at a stretch ratio of approximately 1:4 by 1:4 using a KARO IV pantograph stretcher (Bruckner Gmbh, Siegfred, Germany). A 115 mm by 115 mm sample of the scored sheet was mounted into the stretcher (with an available stretch area of 100 mm by 100 mm), heated for 60 seconds at 150° C., and then stretched at a rate of 100%/second to a final dimension of 400 mm by 400 mm between grips. The resulting material, as depicted in FIG. 3, had an ornamental appearance resulting from the criss-cross diamond-like pattern imparted into the film by the score cuts. The film had a matte finish and varying levels of opacity and haze due to the varying levels of thickness in the film. [0036]
  • EXAMPLE 2
  • A biaxially oriented film was prepared as in Example 1 except the sheet was score cut on only one side at a spacing of 305 micrometers. [0037]
  • EXAMPLE 3
  • A biaxially oriented film was prepared as in Example 1 except the spacing of the score cuts was 305 micrometers. [0038]
  • EXAMPLE 4
  • A biaxially oriented film was prepared as in Example 1 except the spacing of the score cuts was 610 micrometers. [0039]
  • EXAMPLE 5
  • A biaxially oriented film was prepared as in Example 1 except the sheet was stretched to a 5 by 5 degree of orientation and the spacing of the score cuts was 610 micrometers. [0040]
  • The films were tested for tear strength using an Elmendorf Tear tester. The areas of the films having increased thickness and lesser orientation resulted in significantly higher tear strength as compared to an unscored film. When the film was scored only on one side, a small improvement in tear strength resulted in the machine direction. When scored on only one side the tear tends to propagate along the score line as this is the region of lowest thickness. When scored on both sides the tear also propagates along a score line, but the tear front encounters local regions of higher thickness and lesser orientation resulting in higher tear strength. As the spacing of the score cuts decreases, the tear strength correspondingly increases due to a higher frequency of thick regions. [0041]
    TABLE 1
    Score cut spacing CD Tear strength MD Tear strength
    Sample (micrometers) (grams/ply) (grams/ply)
    Non-scored 4 16 20
    by 4 biax film
    Example 1 203 67 71
    Example 2 305 12 24
    Example 3 305 50 57
    Example 4 610 28 30
    Non-scored 5 12 10
    by 5 biax film
    Example 5 610 29 18

Claims (40)

    What is claimed is:
  1. 1. A method of forming an oriented film structure comprising:
    providing a film structure of an orientable polymer which has first and second major surfaces; and scoring or cutting at least one of the major surfaces forming predetermined separable elements; and
    inelastically stretching the film structure to separate the separable surface elements across the at least one major surface of the film structure, thereby creating spacings between adjacent separated separable surface elements.
  2. 2. The method of claim 1, wherein the film structure including the separable surface elements are formed by at least partially cutting the film structure in at least one direction in a series of substantially parallel lines.
  3. 3. The method of claim 1 wherein the separable surface elements are formed by at least partially cutting the film structure on both said first and second major surfaces.
  4. 4. The method of claim 3 wherein the separable surface elements are formed in at least two directions which overlap at an angle of from 10 to 170 degrees.
  5. 5. The method of claim 2 wherein the film structure is oriented at an angle to the at least one direction.
  6. 6. The method of claim 4 wherein the film structure is biaxially oriented at least one direction of orientation being at an angle to one of the directions.
  7. 7. The method of claim 1 wherein the film structure is a multilayer film.
  8. 8. The method of claim 2 wherein the parallel lines are substantially linear.
  9. 9. The method of claim 1 wherein the at least one film surface is scored or cut in at least two directions so as to form discrete multiple sided predetermined segments.
  10. 10. An oriented film structure having a first and second major surface and a base layer at least a first major surface having surface elements wherein the base layer is an inelasticly oriented layer.
  11. 11. An oriented film structure of claim 10 wherein the base layer is an oriented thermoplastic film layer.
  12. 12. An oriented film structure of claim 11 wherein the base layer is oriented in at least two directions.
  13. 13. An oriented film structure of claim 11 wherein the base layer is oriented having a thickness of from 2 to 250 micrometers.
  14. 14. An oriented film structure of claim 11 wherein the base layer is oriented having a thickness of from 10 to 75 micrometers.
  15. 15. An oriented film structure of claim 10 wherein the surface elements have a height above the base layer of from 5 to 50 micrometers.
  16. 16. An oriented film structure of claim 10 wherein the surface elements have a width of from 100 to 1000 micrometers.
  17. 17. An oriented film structure of claim 16 wherein the surface elements are discrete structures each being isolated from its neighbor.
  18. 18. An oriented film structure of claim 17 wherein the surface elements each are a series of multi-sided segments arranged as a grid.
  19. 19. An oriented film structure of claim 16 wherein the surface elements are continuous ribs.
  20. 20. An oriented film structure of claim 17 wherein the surface elements are continuous ribs on both major surfaces of the film structure.
  21. 21. An oriented film structure of claim 20 wherein the surface elements on opposite faces extend in different directions so that they overlap.
  22. 22. An oriented film structure of claim 21 wherein the surface elements overlap one opposite face at an angle of from 10 to 170 degrees.
  23. 23. An oriented film structure of claim 21 wherein the surface elements overlap one opposite face at an angle of from 45 to 135 degrees.
  24. 24. An oriented film structure of claim 19 wherein the surface elements are substantially linear ribs.
  25. 25. An oriented film structure of claim 19 wherein the surface elements comprise 10 to 90 percent of the surface area of the film structure.
  26. 26. An oriented film structure of claim 19 wherein the surface elements comprise 25 to 50 percent of the surface area of the film structure.
  27. 27. An oriented film structure of claim 19 wherein at least a portion of the surface elements have a width of from 100 to 500 micrometers.
  28. 28. An oriented film structure of claim 19 wherein at least a portion of the surface elements have a width of from 100 to 1000 micrometers.
  29. 29. An oriented film structure of claim 11 wherein at least a portion of the surface elements have a height above the base layer of from 5 to 25 micrometers.
  30. 30. An oriented film structure of claim 11 wherein the surface elements are from 5 to 25 micrometers high above the base layer and the base layer has a thickness of from 10 to 50 micrometers.
  31. 31. An oriented film structure of claim 11 wherein the film structure base layer is an orientable thermoplastic film.
  32. 32. An oriented film structure of claim 31 wherein the thermoplastic film is a semicrystalline thermoplastic polymer of amorphous glassy polymer.
  33. 33. An oriented film structure of claim 31 wherein the thermoplastic film is semicrystalline polymer selected from a linear low density polyethylene, high density polyethylene, ultra high molecular weight polyethylene, isotactic polypropylene, blends of isotactic polypropylene and substantially syndiotactic polypropylene and blends of isotactic polypropylene and polyethylene.
  34. 34. An oriented film structure of claim 30 wherein the base layer has a thickness of from 2 to 250 micrometers.
  35. 35. An oriented film structure of claim 34 wherein the base layer has a thickness of from 5 to 150 micrometers.
  36. 36. An oriented film structure of claim 34 wherein the base layer has a thickness of from 10 to 75 micrometers.
  37. 37. An oriented film structure of claim 10 wherein the film structure is a single layer film.
  38. 38. An oriented film structure of claim 10 wherein the film structure is a multilayer film.
  39. 39. The method of claim 1 wherein the series of parallel lines are intermittent.
  40. 40. The method of claim 1 wherein the series of parallel lines are continuous.
US10459686 2001-12-11 2003-06-11 Film structures and methods of making film structures Abandoned US20030215611A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10016544 US7001475B2 (en) 2001-12-11 2001-12-11 Film structures and methods of making film structures
US10459686 US20030215611A1 (en) 2001-12-11 2003-06-11 Film structures and methods of making film structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10459686 US20030215611A1 (en) 2001-12-11 2003-06-11 Film structures and methods of making film structures

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10016544 Continuation-In-Part US7001475B2 (en) 2001-12-11 2001-12-11 Film structures and methods of making film structures

Publications (1)

Publication Number Publication Date
US20030215611A1 true true US20030215611A1 (en) 2003-11-20

Family

ID=21777665

Family Applications (2)

Application Number Title Priority Date Filing Date
US10016544 Expired - Fee Related US7001475B2 (en) 2001-12-11 2001-12-11 Film structures and methods of making film structures
US10459686 Abandoned US20030215611A1 (en) 2001-12-11 2003-06-11 Film structures and methods of making film structures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US10016544 Expired - Fee Related US7001475B2 (en) 2001-12-11 2001-12-11 Film structures and methods of making film structures

Country Status (9)

Country Link
US (2) US7001475B2 (en)
EP (1) EP1453929B2 (en)
JP (1) JP4620350B2 (en)
KR (1) KR100970405B1 (en)
CN (1) CN1246409C (en)
DE (2) DE60214226T3 (en)
ES (1) ES2271370T3 (en)
RU (1) RU2004117918A (en)
WO (1) WO2003050198A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030221375A1 (en) * 2002-06-03 2003-12-04 Nehring Walter Wayne Directional flow flashing
US20040253411A1 (en) * 2003-06-11 2004-12-16 3M Innovative Properties Company Reinforced hook web
US20080014410A1 (en) * 2006-06-28 2008-01-17 3M Innovative Properties Company Oriented Polymeric Articles and Method
US20100151233A1 (en) * 2008-12-12 2010-06-17 Nitto Denko Corporation Paint film-protecting sheet
US20130312153A1 (en) * 2006-01-30 2013-11-28 Hbi Branded Apparel Enterprises, Llc Methods for controlled application of adhesive
US20140154113A1 (en) * 2012-12-05 2014-06-05 Ge Oil & Gas Esp, Inc. High temperature downhole motors with advanced polyimide insulation materials
CN104508919A (en) * 2012-08-01 2015-04-08 迪睿合电子材料有限公司 Method for manufacturing anisotropically conductive film, anisotropically conductive film, and connective structure
CN104747091A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Diamond impregnated segment with tooth cavities

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7001475B2 (en) * 2001-12-11 2006-02-21 3M Innovative Properties Company Film structures and methods of making film structures
US7326453B2 (en) * 2004-02-04 2008-02-05 3M Innovative Properties Company Article with selectively activated adhesive
US20060188710A1 (en) * 2004-02-04 2006-08-24 Windorski David C Pad with selectively activated adhesive
JP5213204B2 (en) * 2004-03-08 2013-06-19 リンテック株式会社 Adhesive sheet and a production method thereof
US20050276953A1 (en) * 2004-06-14 2005-12-15 3M Innovative Properties Company Selective adhesive gift wrapping sheet
US20050276971A1 (en) * 2004-06-14 2005-12-15 3M Innovative Properties Company Selective adhesive gift wrapping sheet and method for using same
US8643532B1 (en) 2005-12-12 2014-02-04 Nomadics, Inc. Thin film emitter-absorber apparatus and methods
DK1969391T3 (en) * 2005-12-12 2014-10-27 Irina Puscasu The thin film absorber-emitter device and method
US8080198B2 (en) * 2006-10-20 2011-12-20 Avery Dennison Corporation Elastic diaper component
WO2008028114A1 (en) * 2006-08-31 2008-03-06 Avery Dennison Corporation Elastic laminate
US20090311465A1 (en) * 2008-06-11 2009-12-17 De Jong Johannes H A Stretchable laminate
JP5631690B2 (en) * 2010-10-15 2014-11-26 セイコーインスツル株式会社 Adhesive label and a manufacturing method thereof and a manufacturing apparatus
DK2468227T3 (en) * 2010-12-23 2013-10-07 Dirk Wuest New kinesiology tape
USD796033S1 (en) 2011-02-16 2017-08-29 3M Innovative Properties Company Mechanical fastener
US9138031B2 (en) 2011-02-16 2015-09-22 3M Innovative Properties Company Method of making a mechanical fastening strip and reticulated mechanical fastening strip therefrom
USD794181S1 (en) 2011-02-16 2017-08-08 3M Innovative Properties Company Mechanical closure element
KR20140063826A (en) * 2011-09-20 2014-05-27 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Textured film and process for manufacture
JP6290867B2 (en) 2012-05-16 2018-03-07 スリーエム イノベイティブ プロパティズ カンパニー Manufacturing method of the mechanical fastener with branching disk
JP6138924B2 (en) 2012-05-16 2017-05-31 スリーエム イノベイティブ プロパティズ カンパニー Method of making a mechanical fastener using a crown surface
US9475205B2 (en) 2012-05-18 2016-10-25 3M Innovative Properties Company Method of making a mechanical fastener and apparatus including a roller with protrusions
US8889243B2 (en) 2012-08-16 2014-11-18 3M Innovative Properties Company Mechanical fastening nets and methods of making the same
US9314962B2 (en) 2013-05-10 2016-04-19 3M Innovative Properties Company Method of separating strands on a stretching surface
US9649824B2 (en) 2013-05-23 2017-05-16 3M Innovative Properties Company Laminates including a reticulated thermoplastic film and method of making the same
US9944764B2 (en) 2013-05-23 2018-04-17 3M Innovative Properties Company Reticulated thermoplastic film and method of making the same
US20160111604A1 (en) * 2014-10-20 2016-04-21 PlayNitride Inc. Method for expanding spacings in light-emitting element array and light-emitting element array unit

Citations (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714562A (en) * 1953-10-09 1955-08-02 Munising Paper Company Self-sealing wrapping material
US3301741A (en) * 1963-09-11 1967-01-31 Minnesota Mining & Mfg Adhesive sheet and method of making
US3314838A (en) * 1964-08-26 1967-04-18 Minnesota Mining & Mfg Pressure sensitive adhesives containing hollow spheroidal particles
US3331729A (en) * 1963-02-14 1967-07-18 Minnesota Mining & Mfg Adhesive bonding method and product
US3379562A (en) * 1964-08-17 1968-04-23 Minnesota Mining & Mfg Self-adhering sheet product
US3554835A (en) * 1967-08-16 1971-01-12 Morgan Adhesives Co Slidable adhesive laminate and method of making
US3857731A (en) * 1973-04-06 1974-12-31 Minnesota Mining & Mfg Acrylate microsphere-surfaced sheet material
US4101358A (en) * 1975-06-26 1978-07-18 Hercules Incorporated Method of making network structures
US4537809A (en) * 1979-04-09 1985-08-27 Avery International Corporation Van label having non-linear discontinuous score lines in the backing
US4556595A (en) * 1981-07-16 1985-12-03 Nippon Carbide Kogyo Kabushiki Kaisha Pressure-sensitive adhesive sheet structure having relocatable properties
US4736843A (en) * 1986-06-12 1988-04-12 Micro-Mega S.A. Packing case for dental canal instruments
US4894060A (en) * 1988-01-11 1990-01-16 Minnesota Mining And Manufacturing Company Disposable diaper with improved hook fastener portion
US4959264A (en) * 1987-01-06 1990-09-25 The Wiggins Teape Group Limited Release paper for making artificial leather
US5092947A (en) * 1987-06-19 1992-03-03 Gurit-Essex Ag Method of reinforcing panels
US5238736A (en) * 1992-09-18 1993-08-24 Minnesota Mining And Manufacturing Company Polymeric microspheres for low-friction surfaces
US5240693A (en) * 1991-05-01 1993-08-31 University Of New Mexico Image enhancement by coadministration of biomodulators and structurally modified imaging agents
US5240761A (en) * 1988-08-29 1993-08-31 Minnesota Mining And Manufacturing Company Electrically conductive adhesive tape
US5344693A (en) * 1990-03-16 1994-09-06 Bernard Sanders Component with spacing means
US5529829A (en) * 1993-09-30 1996-06-25 Minnesota Mining And Manufacturing Company Array of conductive pathways
US5537723A (en) * 1993-09-08 1996-07-23 Ykk Corporation Molded surface fastener
US5650215A (en) * 1993-10-29 1997-07-22 Minnesota Mining And Manufacturing Company Pressure-sensitive adhesives having microstructured surfaces
US5839634A (en) * 1997-01-27 1998-11-24 The Procter & Gamble Co. Blade for severing sheet materials
US5866220A (en) * 1995-06-07 1999-02-02 Borden Decorative Products, Inc. Method for making repositionable wall covering and intermediate for same
US5871607A (en) * 1996-01-10 1999-02-16 The Procter & Gamble Company Material having a substance protected by deformable standoffs and method of making
US5948493A (en) * 1997-07-17 1999-09-07 Reynolds Metals Company Plastic wrap with cling layer
US5965235A (en) * 1996-11-08 1999-10-12 The Procter & Gamble Co. Three-dimensional, amorphous-patterned, nesting-resistant sheet materials and method and apparatus for making same
US6020062A (en) * 1996-11-08 2000-02-01 D.W. Wallcovering Inc. Article having slippable adhesive
US6022612A (en) * 1996-06-25 2000-02-08 Applied Extrusion Technologies, Inc. Biaxially oriented polypropylene films having matte-finish and improved cold seal receptivity
US6063482A (en) * 1995-05-31 2000-05-16 Hoechst Aktiengesellschaft Biaxially oriented polypropylene film having improved tear propagation resistance
US6099940A (en) * 1997-07-16 2000-08-08 The Procter & Gamble Company Selectively-activatible three-dimensional sheet material having multi-stage progressive activation to deliver a substance to a target surface
US6256788B1 (en) * 1999-08-02 2001-07-10 Kathryn M. Loewer Disposable bib
US6514597B1 (en) * 1997-10-01 2003-02-04 #M Innovative Properties Company Embossed oriented polymer films
US20030121586A1 (en) * 2001-12-11 2003-07-03 3M Innovative Properties Company Tack-on-pressure films for temporary surface protection and surface modification
US6982055B2 (en) * 2003-03-25 2006-01-03 3M Innovative Properties Company Multiheaded hook
US7001475B2 (en) * 2001-12-11 2006-02-21 3M Innovative Properties Company Film structures and methods of making film structures
US7052636B2 (en) * 2002-01-15 2006-05-30 3M Innovative Properties Company Heat treated profile extruded hook
US7235202B2 (en) * 2003-02-28 2007-06-26 3M Innovative Properties Company Net structure and method of making
US7670522B2 (en) * 2003-06-11 2010-03-02 3M Innovative Properties Company Reinforced hook web

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB975783A (en) 1962-07-16 1964-11-18 Us Rubber Co Method of making an article of a polymeric resin having co-ordinated surface relief and colouring
DE3168303D1 (en) * 1980-07-30 1985-02-28 Smith & Nephew Ass Elastic bandages
US4567011A (en) * 1984-04-19 1986-01-28 Nalle George S Jr Manufacture of helical nets
US4626460A (en) * 1985-07-11 1986-12-02 Mobil Oil Corporation Coextruded pressure sensitive label stock material with integral peelable backing
JPS63106702A (en) * 1986-10-24 1988-05-11 Toppan Printing Co Ltd Production of color filter
DE3713976A1 (en) * 1987-04-25 1988-11-03 Mildenberger & Willing Verpack Multilayer plastic film with an adhesive layer
US5296277A (en) * 1992-06-26 1994-03-22 Minnesota Mining And Manufacturing Company Positionable and repositionable adhesive articles
GB9421122D0 (en) 1994-01-14 1994-12-07 Ball Nigel W B Protective devices for clothing and other fabrics and processes for the production thereof
DE69523328T2 (en) 1994-09-30 2002-07-25 Kimberly Clark Co A slotted elastic nonwoven laminate
JP3192333B2 (en) * 1994-10-14 2001-07-23 久光製薬株式会社 Patch
ES2186884T3 (en) 1996-01-10 2003-05-16 Procter & Gamble Method for obtaining a material having a substance protected by deformable elements separation.
DK0874765T3 (en) 1996-01-10 2003-03-10 Procter & Gamble Improved storage wrap material
EP0941069A1 (en) 1996-11-12 1999-09-15 Pharmacia & Upjohn Aktiebolag COMPACT MEMBER COMPRISING A PLURALITY OF POROUS CELLULOSE MATRICES, (PCMs), METHOD OF MANUFACTURING AND USE THEREOF
DE69807061T2 (en) 1997-05-09 2003-02-27 Procter & Gamble Flexible collapsible self-supporting bags and containers
US6149304A (en) 1997-05-09 2000-11-21 The Procter & Gamble Company Flexible storage bag with selectively-activatible closure
US5968633A (en) 1997-06-06 1999-10-19 The Procter & Gamble Company Selectively-activatible sheet material for dispensing and dispersing a substance onto a target surface
US6106922A (en) 1997-10-03 2000-08-22 3M Innovative Company Coextruded mechanical fastener constructions

Patent Citations (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714562A (en) * 1953-10-09 1955-08-02 Munising Paper Company Self-sealing wrapping material
US3331729A (en) * 1963-02-14 1967-07-18 Minnesota Mining & Mfg Adhesive bonding method and product
US3301741A (en) * 1963-09-11 1967-01-31 Minnesota Mining & Mfg Adhesive sheet and method of making
US3379562A (en) * 1964-08-17 1968-04-23 Minnesota Mining & Mfg Self-adhering sheet product
US3314838A (en) * 1964-08-26 1967-04-18 Minnesota Mining & Mfg Pressure sensitive adhesives containing hollow spheroidal particles
US3554835A (en) * 1967-08-16 1971-01-12 Morgan Adhesives Co Slidable adhesive laminate and method of making
US3857731A (en) * 1973-04-06 1974-12-31 Minnesota Mining & Mfg Acrylate microsphere-surfaced sheet material
US4101358A (en) * 1975-06-26 1978-07-18 Hercules Incorporated Method of making network structures
US4537809A (en) * 1979-04-09 1985-08-27 Avery International Corporation Van label having non-linear discontinuous score lines in the backing
US4556595A (en) * 1981-07-16 1985-12-03 Nippon Carbide Kogyo Kabushiki Kaisha Pressure-sensitive adhesive sheet structure having relocatable properties
US4736843A (en) * 1986-06-12 1988-04-12 Micro-Mega S.A. Packing case for dental canal instruments
US4959264A (en) * 1987-01-06 1990-09-25 The Wiggins Teape Group Limited Release paper for making artificial leather
US5092947A (en) * 1987-06-19 1992-03-03 Gurit-Essex Ag Method of reinforcing panels
US4894060A (en) * 1988-01-11 1990-01-16 Minnesota Mining And Manufacturing Company Disposable diaper with improved hook fastener portion
US5240761A (en) * 1988-08-29 1993-08-31 Minnesota Mining And Manufacturing Company Electrically conductive adhesive tape
US5344693A (en) * 1990-03-16 1994-09-06 Bernard Sanders Component with spacing means
US5240693A (en) * 1991-05-01 1993-08-31 University Of New Mexico Image enhancement by coadministration of biomodulators and structurally modified imaging agents
US5238736A (en) * 1992-09-18 1993-08-24 Minnesota Mining And Manufacturing Company Polymeric microspheres for low-friction surfaces
US5537723A (en) * 1993-09-08 1996-07-23 Ykk Corporation Molded surface fastener
US5529829A (en) * 1993-09-30 1996-06-25 Minnesota Mining And Manufacturing Company Array of conductive pathways
US5650215A (en) * 1993-10-29 1997-07-22 Minnesota Mining And Manufacturing Company Pressure-sensitive adhesives having microstructured surfaces
US6063482A (en) * 1995-05-31 2000-05-16 Hoechst Aktiengesellschaft Biaxially oriented polypropylene film having improved tear propagation resistance
US5866220A (en) * 1995-06-07 1999-02-02 Borden Decorative Products, Inc. Method for making repositionable wall covering and intermediate for same
US5871607A (en) * 1996-01-10 1999-02-16 The Procter & Gamble Company Material having a substance protected by deformable standoffs and method of making
US6022612A (en) * 1996-06-25 2000-02-08 Applied Extrusion Technologies, Inc. Biaxially oriented polypropylene films having matte-finish and improved cold seal receptivity
US5965235A (en) * 1996-11-08 1999-10-12 The Procter & Gamble Co. Three-dimensional, amorphous-patterned, nesting-resistant sheet materials and method and apparatus for making same
US6020062A (en) * 1996-11-08 2000-02-01 D.W. Wallcovering Inc. Article having slippable adhesive
US5839634A (en) * 1997-01-27 1998-11-24 The Procter & Gamble Co. Blade for severing sheet materials
US6099940A (en) * 1997-07-16 2000-08-08 The Procter & Gamble Company Selectively-activatible three-dimensional sheet material having multi-stage progressive activation to deliver a substance to a target surface
US5948493A (en) * 1997-07-17 1999-09-07 Reynolds Metals Company Plastic wrap with cling layer
US6514597B1 (en) * 1997-10-01 2003-02-04 #M Innovative Properties Company Embossed oriented polymer films
US6256788B1 (en) * 1999-08-02 2001-07-10 Kathryn M. Loewer Disposable bib
US20030121586A1 (en) * 2001-12-11 2003-07-03 3M Innovative Properties Company Tack-on-pressure films for temporary surface protection and surface modification
US7001475B2 (en) * 2001-12-11 2006-02-21 3M Innovative Properties Company Film structures and methods of making film structures
US7052636B2 (en) * 2002-01-15 2006-05-30 3M Innovative Properties Company Heat treated profile extruded hook
US7235202B2 (en) * 2003-02-28 2007-06-26 3M Innovative Properties Company Net structure and method of making
US6982055B2 (en) * 2003-03-25 2006-01-03 3M Innovative Properties Company Multiheaded hook
US7670522B2 (en) * 2003-06-11 2010-03-02 3M Innovative Properties Company Reinforced hook web

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030221375A1 (en) * 2002-06-03 2003-12-04 Nehring Walter Wayne Directional flow flashing
US7100331B2 (en) * 2002-06-03 2006-09-05 Walter Wayne Nehring Directional flow flashing
US20040253411A1 (en) * 2003-06-11 2004-12-16 3M Innovative Properties Company Reinforced hook web
US7067185B2 (en) * 2003-06-11 2006-06-27 3M Innovative Properties Company Reinforced hook web
US20060145388A1 (en) * 2003-06-11 2006-07-06 3M Innovative Properties Company Reinforced hook web
US7670522B2 (en) 2003-06-11 2010-03-02 3M Innovative Properties Company Reinforced hook web
US20130312153A1 (en) * 2006-01-30 2013-11-28 Hbi Branded Apparel Enterprises, Llc Methods for controlled application of adhesive
US9259885B2 (en) 2006-06-28 2016-02-16 3M Innovative Properties Company Oriented polymeric articles and method
US20080014410A1 (en) * 2006-06-28 2008-01-17 3M Innovative Properties Company Oriented Polymeric Articles and Method
US9134471B2 (en) * 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method
US20100151233A1 (en) * 2008-12-12 2010-06-17 Nitto Denko Corporation Paint film-protecting sheet
CN104508919A (en) * 2012-08-01 2015-04-08 迪睿合电子材料有限公司 Method for manufacturing anisotropically conductive film, anisotropically conductive film, and connective structure
US20140154113A1 (en) * 2012-12-05 2014-06-05 Ge Oil & Gas Esp, Inc. High temperature downhole motors with advanced polyimide insulation materials
CN104747091A (en) * 2013-12-31 2015-07-01 中国石油化工集团公司 Diamond impregnated segment with tooth cavities

Also Published As

Publication number Publication date Type
JP4620350B2 (en) 2011-01-26 grant
RU2004117918A (en) 2006-01-10 application
CN1246409C (en) 2006-03-22 grant
JP2005511853A (en) 2005-04-28 application
DE60214226T2 (en) 2007-07-19 grant
ES2271370T3 (en) 2007-04-16 grant
KR20040074068A (en) 2004-08-21 application
CN1643097A (en) 2005-07-20 application
US7001475B2 (en) 2006-02-21 grant
EP1453929A1 (en) 2004-09-08 application
DE60214226D1 (en) 2006-10-05 grant
EP1453929B1 (en) 2006-08-23 grant
KR100970405B1 (en) 2010-07-15 grant
WO2003050198A1 (en) 2003-06-19 application
EP1453929B2 (en) 2011-06-08 grant
DE60214226T3 (en) 2012-01-12 grant
US20030124291A1 (en) 2003-07-03 application

Similar Documents

Publication Publication Date Title
US3454694A (en) Method of forming plastic book backs
US3441638A (en) Process for making an open network structure
US3038198A (en) Apparatus for perforating thermoplastic sheets
US3448183A (en) Method for the preparation of multilayer film
Schmitz et al. Films
US6258308B1 (en) Process for adjusting WVTR and other properties of a polyolefin film
US6432527B1 (en) Embossed film having controlled tear
US6114024A (en) Multilayer breathable film
US5286552A (en) Process for the production of propylene polymer films and laminates and products thus obtained
US6291053B1 (en) Multilayer biaxially oriented polyester film, and the use thereof, and process for the production thereof
US20040170801A1 (en) Net structure and method of making
US3906073A (en) Methods of making network structures
US5232535A (en) Process for preparing embossed, coated paper
US3300366A (en) Perforated sheet material
US6418610B2 (en) Methods for using a support backer board system for siding
US5626944A (en) Laminated films
US4075379A (en) Melt-embossed polymer film
US6635334B1 (en) Cloth-like polymeric films
US20110008570A1 (en) Integrally foamed microstructured article
US7531228B2 (en) Dual scored easy open film
US20020074691A1 (en) High speed method of making plastic film and nonwoven laminates
US3746607A (en) Sheet material
US5032433A (en) Thermoplastic web and process for manufacture same
US5534209A (en) Method for manufacturing a liquid crystal polymer film and a liquid crystal polymer film made thereby
US3985599A (en) Slit film

Legal Events

Date Code Title Description
AS Assignment

Owner name: 3M INNOVATIVE PROPERTIES COMPANY, MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SETH, JAYSHREE;AUSEN, RONALD W.;REEL/FRAME:014179/0171

Effective date: 20030611