CN214525629U

CN214525629U - Packaging film

Info

Publication number: CN214525629U
Application number: CN202120104578.7U
Authority: CN
Inventors: 王超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-10-29
Anticipated expiration: 2031-01-15

Abstract

The utility model relates to a packaging material technical field is a packaging film, including a plurality of packing section, between every two adjacent packing sections, through from type section separable bonding together between preceding packing section and the back packing section to, preceding packing section and the bonding strength from between the type section are greater than back packing section and from the bonding strength between the type section. The utility model has the advantages of reasonable and compact structure, can be in the same place a plurality of packing section end to end from the type section, from the bonding region of the preceding packing section of section complete coverage during the preparation, bond in other positions of rolling equipment or packing section after the bonding region of the preceding packing section spills, avoid appearing twining the membrane, phenomenons such as block, back packing section is prior to preceding packing section and is separated from the type section during the use, make the outside that the bonding region of back packing section tightly kept away from in this packing section and wrapped up the cotton, safety, laborsaving, simple and convenient, efficient characteristics.

Description

Packaging film

Technical Field

The utility model relates to a packaging material technical field is a packaging film.

Background

The polyethylene winding film is a winding film with good toughness, has strong tear resistance, is not easy to damage and damp, and is widely suitable for the integral assembly packaging of various products. The publication number is: CN1692062A, name: a packaging material with Z-shaped locking system and method for making and using this packaging material, Z-shaped locking system need cut off two sections of unit packaging film junction, stick strong adhesive and release film separately two sections of unit packaging film end, stick strong adhesive and release film together finally, because the technological process is tedious and easy to misplace in the course of sticking together, pull the strong adhesive from releasing the film and make it leak easily in the course of rolling, the strong adhesive after leaking will stick to and beat the membrane on the upper layer, will appear twining the membrane, phenomenon such as blocking, etc. while using. The existing winding film is mostly prepared from low-density polyethylene through a tape casting or film blowing process, so that scattered small parts cannot be integrated, and the product is loosened and separated in adverse environments.

Disclosure of Invention

The utility model provides a packaging film has overcome above-mentioned prior art not enough, and the problem that twines the membrane, block appears easily in its preparation complicacy, the use that can effectively solve current package roll membrane existence.

The technical scheme of the utility model is realized through following measure: the utility model provides a packaging film, includes a plurality of packing section, between every two adjacent packing sections, through from the separable bonding of type section together between preceding packing section and the back packing section to, preceding packing section with from the bonding strength between the type section be greater than back packing section with from the bonding strength between the type section.

The following are further optimization or/and improvement of the technical scheme of the utility model:

above-mentioned packing section can be including rolling up the membrane substrate, it is equipped with first strong viscidity district in proper order to roll up the membrane substrate, non-viscidity district, weak viscidity district and the strong viscidity district of second, it is including from the type membrane to leave the type section, it is equipped with separation layer and non-separation layer respectively to leave the type membrane in the ascending two sides of thickness direction, between every two adjacent packing sections, the strong viscidity district of second of preceding packing section and the non-separation layer of separation type section bond together, the first strong viscidity district of back packing section and the separable bonding of separation layer of separation type section are in the same place, perhaps be equipped with the separation layer from the type membrane upside, between every two adjacent packing sections, the strong viscidity district of second of preceding packing section bonds together from the type membrane downside, the first strong viscidity district of back packing section and the separable bonding of separation layer of separation type section are in the same place.

The first strong sticky area, the non-sticky area and the weak sticky area can be formed by a strong sticky layer, a non-sticky layer and a weak sticky layer which are sequentially arranged on the first surface of the film substrate along the length direction, the second strong sticky area is formed by a strong sticky layer on the second surface of the film substrate, and the first surface of the film substrate and the second surface of the film substrate are two surfaces of the film substrate in the thickness direction.

The film rolling substrate can be wide in the middle and narrow in two sides in the length direction, one end of the weak adhesive layer is close to the second strong adhesive layer, and the other end of the weak adhesive layer extends to the middle of the film rolling substrate along the length direction of the film rolling substrate.

The two side edges of the two sides of the rolled film substrate can be in inclined transition with the two side edges of the middle.

The distance between the non-separation layer of the release film and the length direction is larger than that between the second strong adhesive layer of the previous packaging section adjacent to the non-separation layer of the release film and the length direction.

The above-mentioned core that still can include the circle cover shape twines in rolling up the core outside by a plurality of end to end' S book membrane substrate, and the first face of book membrane substrate is close to a roll core outer wall, rolls up a core outer wall is kept away from to membrane substrate second face, and every two adjacent book membrane substrates and lie in its centre from type membrane connection formation "S" type.

The material of the roll film substrate and the material of the release film can be both flame-retardant materials.

The utility model has the advantages of reasonable and compact structure, can be in the same place a plurality of packing section end to end from the type section, from the bonding region of the preceding packing section of section complete coverage during the preparation, bond in other positions of rolling equipment or packing section after the bonding region of the preceding packing section spills, avoid appearing twining the membrane, phenomenons such as block, back packing section is prior to preceding packing section and is separated from the type section during the use, make the outside that the bonding region of back packing section tightly kept away from in this packing section and wrapped up the cotton, safety, laborsaving, simple and convenient, efficient characteristics.

Drawings

Fig. 1 is a schematic structural view of the preferred embodiment of the present invention in a front view.

FIG. 2 is a schematic bottom view of the rolled film substrate in the preferred embodiment of the present invention.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic view of a partially enlarged structure of a release film in an initial state according to the preferred embodiment of the present invention.

Fig. 5 is a schematic view of a local enlarged structure of the release film during the braking of the roll core in the preferred embodiment of the present invention.

Fig. 6 is a schematic view of a partially enlarged structure of the release film when it is separated from the next packaging section in the preferred embodiment of the present invention.

Fig. 7 is a schematic view of a partially enlarged structure of the release film separated from the next packaging section in the preferred embodiment of the present invention.

The codes in the figures are respectively: 1 is a roll film substrate, 2 is a first strong adhesive layer, 3 is a non-adhesive layer, 4 is a weak adhesive layer, 5 is a second strong adhesive layer, 6 is a release film, 7 is a separation layer, 8 is a non-separation layer, and 9 is a roll core.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in fig. 1, 2, 3, 4, 5, 6 and 7, the packaging film comprises a plurality of packaging sections, between every two adjacent packaging sections, the front packaging section and the rear packaging section are detachably bonded together through a release section, and the bonding strength between the front packaging section and the release section is greater than that between the rear packaging section and the release section.

In the use, through setting up from the type section, can be in the same place a plurality of packing section end to end connection, from the bonding region of a packing section before the type section covers completely during the preparation, bond at other positions of rolling equipment or packing section after the bonding region of a packing section spills, avoid appearing twining the membrane, phenomenons such as block, preceding packing section and from the bonding strength between the type section be greater than back packing section and from the bonding strength between the type section, back packing section is prior to preceding packing section and is separated from the type section during the use, make the bonding region of back packing section tightly bond in this packing section and keep away from the outside of being wrapped up the cotton, the utility model discloses rational in infrastructure and compact, convenient to use has safety, laborsaving, simple and convenient, efficient characteristics.

The packaging film can be further optimized or/and improved according to actual needs:

as shown in the attached

drawings

1, 2, 3, 4, 5, 6 and 7, the packaging section comprises a roll film substrate 1, the roll film substrate 1 is sequentially provided with a first strong sticky area, a non-sticky area, a weak sticky area and a second strong sticky area along the length direction, the release section comprises a release film 6, two sides of the release film 6 in the thickness direction are respectively provided with a separation layer 7 and a non-separation layer 8, between every two adjacent packaging sections, the second strong sticky area of the previous packaging section is bonded with the non-separation layer 8 of the previous packaging section, the first strong sticky area of the next packaging section is bonded with the separation layer 7 of the separate section in a separable way, or a separating layer is arranged on the upper side of the release film 6, between every two adjacent packaging sections, the second strong adhesive area of the front packaging section is bonded with the lower side of the release film 6, and the first strong adhesive area of the rear packaging section is bonded with the separating layer 7 of the release section in a separable way.

According to the demand, the separation layer 7 can be formed by coating the silicon oil layer of the release film 6 or the isolation paper adhered to the double-sided adhesive tape of the release film 6, and the non-separation layer 8 can be the release film 6 body. In the use, through such setting, be convenient for with two adjacent packing section separable bonds together to be convenient for adjust preceding packing section and from the bonding strength between the type section and back packing section and from the bonding strength between the type section, reduce the processing degree of difficulty and cost of manufacture.

As shown in fig. 1, 2, 3, 4, 5, 6, and 7, the first strong adhesion area, the non-adhesion area, and the weak adhesion area are respectively formed by a first strong adhesion layer 2, a non-adhesion layer 3, and a weak adhesion layer 4 sequentially disposed on the first surface of the roll film substrate 1 along the length direction, the second strong adhesion area is formed by a second strong adhesion layer 5 disposed on the second surface of the roll film substrate 1, and the first surface of the roll film substrate 1 and the second surface of the roll film substrate 1 are both surfaces of the roll film substrate 1 in the thickness direction.

According to requirements, the first strong adhesive layer 2 and the second strong adhesive layer 5 can be formed by adhering the conventional well-known strong adhesive polypropylene non-dry double-sided adhesive tape on the roll film substrate 1, the weak adhesive layer 4 can be formed by coating the conventional well-known polyisobutylene resin on the roll film substrate 1 by heating, and the non-adhesive layer 3 is the body of the roll film substrate 1. In the use, through such setting, be convenient for make the packing section, add man-hour and bond together with the strong adhesive linkage 5 of second of 1 second faces of roll membrane substrate from the non-separation layer 8 of type membrane 6, can avoid making first strong adhesive linkage 2 and the weak adhesive linkage 4 of roll on the first face of roll membrane substrate 1 and turn over, the second face of simultaneously roll membrane substrate 1 can be covered by from type membrane 6 after the packing separation, prevent to bond in other positions of roll membrane substrate 1, the first strong adhesive linkage 2 of the first face of roll membrane substrate 1 and the separable bonding of separation layer 7 from type membrane 6 are in the same place, can the snap-off when the packing, weak adhesive linkage 4 is in the same place with the membrane laminating of first layer winding on the cotton, prevent that the membrane surface is smooth, slide when carrying.

As shown in fig. 1, 2 and 3, the roll film substrate 1 has a wide middle part and two narrow sides in the length direction, one end of the weak adhesion layer 4 is close to the second strong adhesion layer 5, and the other end of the weak adhesion layer 4 extends to the middle part of the roll film substrate 1 along the length direction of the roll film substrate 1.

In the use, extend to the 1 middle part of rolling up membrane substrate through the 4 other ends of weak adhesive layer along 1 length direction of rolling up membrane substrate, can improve the utility model discloses in transportation and use, prevent the utility model discloses take place the condition loose and separation under unfavorable environment.

As shown in fig. 1, 2 and 3, two side edges of two sides and two side edges of the middle of the roll film substrate 1 are in inclined transition.

In the using process, through the arrangement, the weak-viscosity area is convenient to arrange, and the glue layer is convenient to coat on the roll film substrate 1 in the weak-viscosity area.

As shown in fig. 4, 5, 6 and 7, the distance in the longitudinal direction of the non-separating layer 8 of the release film 6 is greater than the distance in the longitudinal direction of the second strong adhesive layer 5 of the preceding package stage located adjacent thereto.

The projection of the second strong adhesive layer 5 is located entirely within the non-separating layer 8 of the release film 6, as desired. In the use, through such setting, when winding roll membrane substrate 1, can prevent that the preparation error of the strong viscous layer 5 of second from making the strong viscous layer 5 of second and roll membrane substrate 1 or roll up membrane equipment bonding together, can reduce the machining precision, improve the reliability of rolling up the membrane in-process, after preceding packing section and back packing section separation, can cover the strong viscous layer 5 of second from type membrane 6 simultaneously, avoid appearing twining the membrane, phenomenon such as block.

As shown in the attached figure 1, the film winding device also comprises a sleeve-shaped winding core 9, wherein a plurality of end-to-end winding film base materials 1 are wound outside the winding core 9, the first surface of each winding film base material 1 is close to the outer wall of the winding core 9, the second surface of each winding film base material 1 is far away from the outer wall of the winding core 9, and every two adjacent winding film base materials 1 and the release film 6 positioned between the two winding film base materials are connected to form an S shape.

In the use, through such setting, be convenient for with the utility model discloses install fast on the machine of unreeling, the installation is simple, also is convenient for roll up winding and follow-up winding parcel thing of membrane substrate 1, and every two adjacent roll up membrane substrate 1 and lie in its centre from type membrane 6 connection formation "S" type, can make the package roll up the membrane when winding the parcel thing, preceding packing section and back packing section separation back, first strong viscous layer 2 bonds in the parcel thing outside behind the leading wheel.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the material of the roll film substrate 1 and the material of the release film 6 are both flame retardant materials.

In the use process, through the arrangement, other wrapped objects can be prevented from being ignited after a single wrapped object catches fire, and potential safety hazards are reduced.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

The preparation process of the best embodiment of the utility model: firstly, adding a prepared material into a feeding hopper of a three-layer co-extrusion film blowing machine for mixing, controlling the heating temperature and the feeding speed, and starting film blowing; the method comprises the steps of respectively bonding a strong-viscosity double-sided adhesive and a weak-viscosity non-setting adhesive on a first strong-viscosity area and a weak-viscosity area of a first surface of a roll film substrate 1, cutting the edge of the roll film substrate 1 at a specified position by using a cutter to form a narrowed edge, then attaching a release film 6 and the strong-viscosity double-sided adhesive to a second surface of the roll film substrate 1, and then attaching the release film 6 and release paper of the strong-viscosity double-sided adhesive together by using folding equipment.

The utility model discloses best embodiment's use: during operation, finished winding film coiled materials which are wound are placed in a film storage chamber of a cotton picker, a driver of the cotton picker presses down a packing button after a certain amount of cotton is picked, the winding film starts to pack the cotton, when the cotton is picked to a certain amount, a winding core 9 brakes, the cotton in a cotton storage tank continues to rotate, a parting film 6 is separated from a first strong adhesive layer 2, and finally the first strong adhesive layer 2 is bonded on a winding film base material 1 on the outermost side of the cotton bale to enable the winding film coiled materials to be firmly bonded, so that a final sealing effect is formed.

Claims

1. The utility model provides a packaging film, its characterized in that includes a plurality of packing sections, between every two adjacent packing sections, between preceding packing section and the back packing section through from the separable bonding of type section together to, preceding packing section with from the bonding strength between the type section be greater than back packing section with from the bonding strength between the type section.

2. The packaging film according to claim 1, wherein the packaging section comprises a roll film substrate, the roll film substrate is sequentially provided with a first strong adhesive area, a non-adhesive area, a weak adhesive area and a second strong adhesive area along the length direction, the release section comprises a release film, two sides of the release film in the thickness direction are respectively provided with a separation layer and a non-separation layer, between every two adjacent packaging sections, the second strong adhesive area of the previous packaging section and the non-separation layer of the release section are bonded together, the first strong adhesive area of the later packaging section and the separation layer of the release section are bonded together in a separable manner, or the upper side of the release film is provided with a separation layer, between every two adjacent packaging sections, the second strong adhesive area of the previous packaging section and the lower side of the release film are bonded together, and the first strong adhesive area of the later packaging section and the separation layer of the release section are bonded together in a separable manner.

3. The packaging film according to claim 2, wherein the first strongly adhesive region, the non-adhesive region and the weakly adhesive region are respectively formed by a first strongly adhesive layer, a non-adhesive layer and a weakly adhesive layer provided on a first side of the roll film substrate in this order along the length direction, and the second strongly adhesive region is formed by a second strongly adhesive layer provided on a second side of the roll film substrate, the first side of the roll film substrate and the second side of the roll film substrate being both sides of the roll film substrate in the thickness direction.

4. The packaging film of claim 3, wherein the roll film substrate is wider at the center and narrower at the two sides in the longitudinal direction, one end of the weak adhesive layer is adjacent to the second strong adhesive layer, and the other end of the weak adhesive layer extends to the middle of the roll film substrate along the longitudinal direction of the roll film substrate.

5. The packaging film according to claim 4, wherein both side edges of the two sides and both side edges of the middle of the roll film substrate are in oblique transition.

6. The packaging film according to claim 3, 4 or 5, wherein the distance in the length direction of the non-separating layer of the release film is larger than the distance in the length direction of the second strong adhesive layer of the immediately preceding packaging stage.

7. The packaging film according to claim 3, 4 or 5, further comprising a core in the shape of a circular sleeve, wherein a plurality of end-to-end film winding substrates are wound around the core, a first surface of each film winding substrate is close to the outer wall of the core, a second surface of each film winding substrate is far away from the outer wall of the core, and every two adjacent film winding substrates and the release film positioned therebetween are connected to form an "S" shape.

8. The packaging film according to claim 6, further comprising a winding core in a shape of a circular sleeve, wherein a plurality of end-to-end film winding base materials are wound outside the winding core, a first surface of each film winding base material is close to the outer wall of the winding core, a second surface of each film winding base material is far away from the outer wall of the winding core, and every two adjacent film winding base materials and the release film positioned therebetween are connected to form an "S" shape.

9. The packaging film according to claim 2, 3, 4, 5 or 8, wherein the material of the roll film substrate and the material of the release film are both flame retardant.

10. The packaging film according to claim 6, wherein the material of the roll film substrate and the material of the release film are both flame retardant materials.