WO2019214529A1 - 一体式塑料袋多层组合体 - Google Patents

一体式塑料袋多层组合体 Download PDF

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Publication number
WO2019214529A1
WO2019214529A1 PCT/CN2019/085411 CN2019085411W WO2019214529A1 WO 2019214529 A1 WO2019214529 A1 WO 2019214529A1 CN 2019085411 W CN2019085411 W CN 2019085411W WO 2019214529 A1 WO2019214529 A1 WO 2019214529A1
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WO
WIPO (PCT)
Prior art keywords
plastic bag
layer
integrated plastic
integrated
volume
Prior art date
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PCT/CN2019/085411
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English (en)
French (fr)
Inventor
周俊超
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嘉兴优逸客智能家居有限公司
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Application filed by 嘉兴优逸客智能家居有限公司 filed Critical 嘉兴优逸客智能家居有限公司
Priority to KR2020207000071U priority Critical patent/KR20210000139U/ko
Priority to JP2021600038U priority patent/JP3234643U/ja
Publication of WO2019214529A1 publication Critical patent/WO2019214529A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/002—Rolls, strips or like assemblies of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/0006—Flexible refuse receptables, e.g. bags, sacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/04—Refuse receptacles; Accessories therefor with removable inserts
    • B65F1/06—Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks
    • B65F1/062—Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks having means for storing or dispensing spare bags

Definitions

  • the invention relates to the field of plastic bag technology.
  • plastic bags such as shopping bags, garbage bags, etc.
  • Known existing plastic bags are all formed by a flat plastic film or a tubular plastic film.
  • a convenient multi-layer disposable environmentally-friendly garbage bag disclosed in Chinese Utility Model No. 201720791280.1 adopts a technical scheme of a layered garbage bag, and the garbage bag is used from the innermost layer, and each used up One layer can be taken out, and the remaining garbage bags continue to be used in the trash can. It is not necessary to repeatedly bag and it is very convenient to use. However, there are certain problems in its use.
  • the garbage bag of "a convenient multi-layer structure disposable environmental garbage bag” is not a one-piece structure, and the crimping edge is not smooth, and wrinkles and gaps are likely to occur when the multi-layer is knotted. The accumulation of pleats and gaps reduces the available volume of the inner trash bag and is prone to breakage.
  • the garbage bag of the secondary crimping structure will produce corner scraps during the production process; when the secondary crimping structure is unfolded into a three-dimensional cavity, irregular corners or folds will occur, and the volume utilization will also be reduced. rate.
  • the present invention aims to propose an integral plastic bag, and the integrated plastic bag cover layer is combined to form a one-piece plastic bag multi-layer assembly.
  • a new production method capable of producing a one-piece plastic bag multi-layer assembly---"the production method of the integrated plastic bag multi-layer assembly" is disclosed.
  • the invention relates to a method for producing a multi-layer plastic bag multi-layer assembly, in which a thermoplastic plastic sheet is used as a raw material, a multi-layer thermoplastic sheet is stacked, and a thermoplastic sheet is prevented from being formed between adjacent thermoplastic sheets. Interlayer bonding filler; eliminating air between the plastic sheet layers; then performing simultaneous carrier thermoforming on the laminated sheet of the multilayer thermoplastic sheet to form the planar sheet assembly into An integrated plastic bag multi-layer assembly having a pocket cavity; as shown in FIG.
  • the synchronous portable thermoforming comprises: pressing and bonding the sheet assembly 1 and the elastic carrying pad 3; and combining the sheets 1 is heated to a softened state; the elastic carrying pad 3 is elastically expanded in the molding cavity 2 by the fluid pressure; and the elastic coefficient of each position of the elastic carrying pad 3 is set to control the elastic carrying to stop expanding in the molding cavity 2
  • the thinning rate of each position passively following the elastic carrying pad deformation by the sheet assembly, so that each position of the sheet assembly one-to-one corresponding to each position of the elastic carrying pad produces the same thinning rate; Per ironing at a position over the sheet assembly accumulate, eventually forming a combination of integral multilayer plastic bag having a cavity 7 formed in the cavity;
  • the elastic shape of each position of the elastic carrying pad is set with the preset shape and thickness uniformity of the bag cavity of the integrated plastic bag multi-layer assembly.
  • the synchronizing assembly 6 refers to a combination of the elastic carrying mat 3 and the sheet assembly 1 which are press-fitted.
  • the pocket cavity refers to a three-dimensional cavity for holding an article in the structure of the bag.
  • Fluid pressure means air pressure or hydraulic pressure.
  • the molding cavity refers to: according to the shape of the integrated plastic bag multi-layer assembly, correspondingly disposed the female mold, the sheet assembly forms an integrated plastic bag multi-layer assembly in the molding cavity.
  • the thinning rate refers to the thickness change and the decrease speed.
  • the thinning stretch means that the sheet assembly is stretched by the elastic carrying pad, the total volume of each position is not changed, the thickness is thinned, and the surface area is increased; the thinning amount is referred to as thinning The resulting increase in surface area.
  • the setting of the elastic modulus of each position of the elastic carrying pad can be achieved by the following two methods.
  • the elastic carrying mat itself should have the following properties:
  • the shape variable of the sheet assembly is within the elastic deformation capability of the elastic carrying pad.
  • the elastic carrying pad can be selected from silica gel, modified high elastic temperature resistant rubber and the like.
  • the elastic carrying mat that actively regulates the thinning rate of each position of the sheet assembly during the forming process, so that the thickness uniformity of the integrated plastic bag multi-layer assembly can be precisely controlled.
  • the product parameters should be set before the two productions, and the position of the sheet composite into a one-piece plastic bag multi-layer assembly can be mathematically calculated.
  • the elastic coefficient of each position of the elastic carrying pad can be calculated by prior art knowledge such as elastic mechanics, calculus or computer simulation software.
  • the filler between adjacent thermoplastic sheets prevents the thermoplastic sheet from being bonded by heat and softening, and on the other hand, it occupies a space between the thermoplastic sheets. Eliminate air between thermoplastic sheets as much as possible.
  • thermoplastic sheet itself is planar, and the thermoplastic sheet can be obtained by a blown film method or a calendering process.
  • a filler is added to prevent the filler from being bonded. Dimethicone, fluororesin powder, talc, mica powder, etc., can be selected by those skilled in the art according to the material of the integrated plastic bag itself and the use scene.
  • the sheet assembly can be rolled to press the air between the thermoplastic sheets and maintain the sealed state between the thermoplastic sheets. .
  • the filler is a liquid
  • the air between the layered thermoplastic sheets is almost exhausted, so that during the vacuum blistering process, the interlayer displacement is not caused by the expansion of the bubbles, and the thickness is not uniform.
  • the technical problem to be solved by the present invention is to provide an integrated plastic bag multi-layer assembly for the above-mentioned technical deficiencies.
  • an integrated plastic bag multi-layer assembly comprising a multi-layer integrated plastic bag distributed in a sleeve structure; each layer of integrated plastic bags is a one-piece structure; each adjacent two layers are integrated
  • the plastic bags are filled with a filler for preventing interlayer adhesion; each adjacent two-layer integrated plastic bag is concentrically aligned and closely fitted; the side wall or bottom of the storage cavity of the integrated plastic bag multi-layer assembly
  • a volume spare area is provided; the volume spare area is for releasing the available volume when the integral plastic bag is lifted off the storage bin.
  • the edge region of the integrated plastic bag multilayer assembly is provided with a packaging mechanism.
  • the edge region of the integrated plastic bag multi-layer assembly is provided with a handle mechanism.
  • the technical effect of the integrated structure of the integrated plastic bag a. Saving raw materials: the integrated structure has no crimping edges, and no corner scraps due to the crimped edges are generated. b, not easy to break: the integrated structure has no crimping edge, the whole body is flat, there will be no tearing of the crimping edge, and it is not easy to break. c, easy to shape: the integrated structure can achieve a regular three-dimensional shape without folding.
  • the filler can prevent the bonding between the layers of the integrated plastic bag, and will not be bonded together to cause tearing when peeling between the layers, and the resistance of peeling of the layer can be reduced.
  • each adjacent two-layer integrated plastic bag is concentrically aligned and closely fitted, that is, the size of the two-layer integrated plastic bag relative to the inner and outer layers is poor. It is just right, it will not produce wrinkles or voids, which can ensure the available volume of the inner integrated plastic bag, reduce the probability of breakage during use, and help to improve the transportation and storage of the integrated plastic bag multi-layer assembly. Space utilization.
  • the interlayer gap of the integrated plastic bag multi-layer assembly will occur, resulting in looseness, and the inter-layer gap will also cause damage during use; if the inner layer is relatively large, the inner layer Wrinkles appear, and wrinkles accumulate in each layer, which also causes interlayer gaps and loose breakage.
  • the presence of pleats and gaps may result in a reduced volume of the inner-layer integrated plastic bag; it may also result in an increase in the overall occupied volume of the integrated plastic bag multi-layer assembly, which is disadvantageous for transportation and storage.
  • the volume spare area is used for releasing the available volume when the integral plastic bag is lifted off the storage bucket, and the volume spare area can compensate for the volume reduction of the integrated plastic bag when the integrated plastic bag is lifted off from the storage cavity.
  • the function of the packaging mechanism is to prevent the multi-layer integrated plastic bag from loosening, so that the multi-layer integrated plastic bag is joined together at the edge region; it also ensures that the integrated plastic bag can be torn off.
  • the handle mechanism allows the user to extract the integrated plastic bag.
  • Figure 1 is a schematic view of a hot press line and a tear line in a packaging mechanism
  • FIG. 2 is a schematic view of the packaging mechanism interrupting the continuous hot pressing line
  • thermoforming 3 is a schematic diagram of synchronous portable thermoforming in the background art
  • Figure 4 is a schematic view of a bonding line in a packaging mechanism
  • Figure 5 is a schematic view of the inside punching handle in the handle mechanism
  • Figure 6 is a schematic view of the outer punching handle in the handle mechanism
  • Figure 7 is a schematic view of the drawstring handle in the handle mechanism
  • Figure 8 is a schematic view of an integral plastic bag having an edge region
  • Figure 9 is a schematic view showing the working state of the integrated plastic bag in the storage bucket.
  • Figure 10 is a schematic view showing the shape of the volume preparation area
  • Figure 11 is a schematic view showing the volume release of the volume preparation area in the storage bucket of the integrated plastic bag
  • the integrated plastic bag multi-layer assembly 7 comprises a multi-layer integrated plastic bag 8 distributed in a jacket structure; each of the integrated plastic bags 8 is of a one-piece structure; each adjacent two-layer integrated plastic bag 8 The filling is filled with a filler for preventing interlayer adhesion; each adjacent two-layer integrated plastic bag 8 is concentrically aligned and closely fitted; the side wall or bottom of the storage cavity of the integrated plastic bag multi-layer assembly 7 is provided with A volume reserve area; the volume reserve area is for releasing the available volume when the integral plastic bag is lifted off the storage bin 11.
  • the one-piece structure of the one-piece plastic bag 8 means that the entire plastic bag is a whole without any splicing.
  • the order of use of the one-piece plastic bag 8 is to use the innermost layer first, and the innermost layer is placed in the article, and then taken out, and sequentially used to the outer layer.
  • peeling is performed from the edge of the inner layer integrated plastic bag.
  • Each adjacent two-layer integral plastic bag is filled with a filler for preventing interlayer adhesion.
  • the filler to prevent adhesion may be selected from the group consisting of dimethicone, fluororesin powder, talc, mica powder, etc., and those skilled in the art can select according to the material of the integrated plastic bag itself and the use scene.
  • the position of the volume spare area may be provided on the side wall of the one-piece plastic bag multi-layer assembly, or may be placed on the bottom of the one-piece plastic bag multi-layer assembly.
  • the side wall of the integrated plastic bag multi-layer assembly is vertically divided into an upper folding standby area 9 and a lower inner barrel loading area 10;
  • the perimeter of the side wall of the zone 9 is greater than the circumference of the loading area 10 in the bucket;
  • the folded-back spare area 9 is folded over the outside of the storage cavity opening of the storage bucket 11;
  • the loading zone 10 is located within the pocket of the storage bin 11.
  • the in-bucket loading area 10 can be disposed in close contact with the storage chamber of the storage bucket 11; the folded-back spare area 9 is folded over the upper portion of the outer wall of the storage bucket 11.
  • the bottom surface of the integrated plastic bag multi-layer assembly is provided with a convex volume preparation area 12; the volume preparation area 12 is used for releasing the integrated plastic bag when it is lifted from the storage bucket 11 Volume.
  • the volume preparation area 12 may have the following shape.
  • the bottom of the storage chamber of the storage bucket 11 can be flat, and the volume preparation area 12 will have wrinkles at the bottom of the storage chamber.
  • the bottom of the storage chamber of the storage bucket 11 can also be provided with a raised spare area 13 which is convex upward.
  • the volume preparation area 12 is disposed in coincidence with the raised spare area 13.
  • the volume released by the volume preparation zone is used to compensate for the volume reduction of the integrated plastic bag when it is closed.
  • the volume reduction of the integrated plastic bag when it is closed depends on the state of the articles to be placed, such as liquid, powdery solid particles, shredded paper and the like. Therefore, the size of the volume preparation area should be set according to the actual use environment.
  • the edge region 14 of the integrated plastic bag multilayer assembly is provided with a packaging mechanism.
  • the edge region 14 is understood: the one-piece plastic bag is a one-piece structure, the only edge of which is at the upper end opening of the one-piece plastic bag; the upper end opening refers to the upper end opening in the extended state of the one-piece plastic bag. It does not refer to the folded upper end opening in the state of transportation, storage or use.
  • the way of packaging mechanism can be divided into the following
  • the packaging mechanism includes: a hot pressing line 15 for connecting the edge region 14 of each layer of the integrated plastic bag.
  • a hot pressing line 15 for connecting the edge region 14 of each layer of the integrated plastic bag.
  • each edge of the integral plastic bag 8 is provided with an edge region 14 Tear off the line 16.
  • the hot press line 15 connects each layer of the integrated plastic bag in the edge region 14 and is heat-pressed into one body.
  • the hot pressing line fixes all the integrated plastic bags of each layer to prevent looseness; on the other hand, it is convenient for the integrated plastic bag multi-layer assembly to be fixed in the storage bucket for placing it; on the other hand, the hot pressing line can Promote the order in which the one-piece plastic bags are torn from the inside to the outside, and reduce the possibility of tearing off the layers, separating the layers, and tearing them together.
  • the tear line 16 is the name of the word, the role is that the integrated plastic bag is torn at the tear line, so that the integrated plastic bag can be taken out, which is convenient to use.
  • the position of the tear line of each layer of the integrated plastic bag may be the same or different; of course, it is easy to produce when the position is the same.
  • the tear line can be a cold break line or a hot cut line; when the tear line is a cold break line, it is easy to enter the air at the tear line, and the layer of the integrated plastic bag fits tightly depending on the filler. The self-stress is maintained; when the tear line is a hot cutting line, the air will not enter the tear line, further enhancing the close-knit retention ability between the integrated plastic bag layers.
  • a sealing paste may be provided; the sealing paste may be attached to the upper end surface of the storage bucket on which the integrated plastic bag multi-layer assembly is placed to prevent Air enters the gap between the storage bin and the outermost integral plastic bag.
  • the packaging mechanism includes: a one-time intermittent hot pressing line 17 connecting the edge regions of the integrated plastic bags of each layer.
  • the one-piece plastic bag is broken at the tear line and is peelable at the intermittent hot press line without breaking; those skilled in the art can
  • the function of the intermittent hot pressing line is realized by adjusting the density, size or spacing of the hot pressing points of the intermittent hot pressing line.
  • the integrated bag multi-layer assembly may enter the air at the intermittent hot-pressing line, and the interlayer adhesion of the integrated plastic bag needs to be maintained by the filler and the self-stress.
  • the intermittent hot pressing line of the outermost integrated plastic bag or the inner side may be provided with a sealing paste; the sealing paste may be attached to the upper end surface of the storage barrel on which the integrated plastic bag multi-layer assembly is placed to prevent air from entering the storage.
  • the gap between the bucket and the outermost integrated plastic bag may be provided with a sealing paste; the sealing paste may be attached to the upper end surface of the storage barrel on which the integrated plastic bag multi-layer assembly is placed to prevent air from entering the storage.
  • the packaging mechanism includes a one-week bonding line 18 connecting the edge regions of each of the integrated plastic bags.
  • the bonding line is different from the intermittent hot pressing line.
  • the bonding line can connect the edge areas of each layer of the integrated plastic bag, and can also be peeled off by external force. More importantly, at the bonding line, the air does not enter the integrated type.
  • the plastic bag goes between the layers.
  • the outermost integrated plastic bag bonding line or the outside of the bonding line may be provided with a sealing paste, which can be attached to the upper end surface of the storage barrel on which the integrated plastic bag multi-layer assembly is placed to prevent air from entering the storage.
  • a sealing paste which can be attached to the upper end surface of the storage barrel on which the integrated plastic bag multi-layer assembly is placed to prevent air from entering the storage. The gap between the bucket and the outermost integrated plastic bag.
  • the bonding force of the bonding line of the one-piece plastic bag can be set to be layer-by-layer reinforcement.
  • the layer-by-layer tearing can be promoted when the tearing is performed, and the possibility of tearing off the layer, the barrier layer, and the joint tearing can be reduced.
  • the edge region 14 of the integrated plastic bag multilayer assembly is provided with a handle mechanism.
  • the handle mechanism can be a punching handle that is punched out in the edge area, or a drawstring handle.
  • the handle mechanism is a punching handle 19.
  • the position of the punching handle can be set in combination with the position of the tearing line; the tearing line can be set completely around the edge of the integrated plastic bag, or it can be completely incomplete for a week. .
  • a punching handle is provided in the edge region of each layer of the integrated plastic bag.
  • the function of the punching handle is to facilitate the user to peel off and extract the integrated plastic bag layer by layer; as shown in Fig. 6, the structure of the punching handle is extended to the outside at the position where the tearing line has a gap. hand.
  • the handle mechanism is a drawstring handle 20.
  • the tear line around the edge of the integrated plastic bag is placed one week; on the inside of the tear line, each layer of the integrated plastic bag edge area around the circumference is wrapped with a drawstring 21; At least one notch 22 exposing the drawstring is disposed on the surface of the drawstring.
  • Drawstring has the function of being easy to carry and tightening the mouth of the bag, and its use effect is far better than that of the punching handle, but the drawstring will increase the production difficulty and increase the production cost.
  • the drawstring package is realized by a package surface and a laminated edge of the integrated plastic bag. The role of the gap is to facilitate the extraction of the drawstring.
  • the reason why the handle mechanism and the packaging mechanism have a matching relationship is that both are in the edge area of the integrated plastic bag; when the handle mechanism is matched with the package mechanism, the cooperation mode of the two functions can be used.
  • the packaging mechanism is a bonding wire or an intermittent hot pressing wire
  • the handle mechanism should be disposed outside the bonding wire or the intermittent hot pressing wire.

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  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
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Abstract

一种一体式塑料袋多层组合体，它包括以套层结构分布的多层一体式塑料袋；每层一体式塑料袋均为一体式结构；每相邻的两层一体式塑料袋之间填充有防止层间粘接的填充物，各塑料袋均同心对齐且贴紧密合；该一体式塑料袋多层组合体的置物腔的侧壁或底部设置有容积备用区；容积备用区用于当一体式塑料袋从置物桶中提离时释放可用容积；该一体式塑料袋多层组合体的边缘区域设置有封装机构，其边缘区域设置有提手机构。该塑料袋多层组合体节约原材料、破损率低、容积利用率高、存放携带的空间占用量低。

Description

一体式塑料袋多层组合体 技术领域
本发明涉及塑料袋技术领域。
背景技术
已知的现有塑料袋，比如购物袋、垃圾袋等袋体均是由平面状塑料膜或者管状塑料膜压接构成。
现有技术中，比如中国实用新型专201720791280.1公开的一种方便使用的多层结构一次性环保垃圾袋，采用了套层垃圾袋的技术方案，其垃圾袋从最内层开始使用，每用完一层取出即可，剩余的垃圾袋继续在垃圾桶内接着使用，不必反复套袋，使用非常方便。但是其使用上也存在一定的问题。
201720791280.1-《一种方便使用的多层结构一次性环保垃圾袋》的垃圾袋不是一体式结构，其压接边缘处不平滑，在多层套结时，容易出现褶皱和间隙。褶皱和间隙的层层累积会降低内层垃圾袋的可用容积，并且容易出现破损。另一方面，二次压接结构的垃圾袋在生产过程中会产生边角废料；另外二次压接结构展开为立体容腔时会出现不规则的边角或者折面，也会降低容积利用率。
为了克服二次压接结构的塑料袋的缺点，本发明旨在提出一种一体式塑料袋，而且由一体式塑料袋套层组合而成为一体式塑料袋多层组合体。为了本领域技术人员能够实现本发明，现公开一种能够生产出一体式塑料袋多层组合体的新的生产方法-----“一体式塑料袋多层组合体的生产方法”。
一种一体式塑料袋多层组合体的生产方法，以热塑性塑料片材为原材料，将多层热塑性塑料片材层层堆积，在相邻热塑性塑料片材之间，加入防止热塑性塑料片材发生层间粘接的填充物；消除塑料片材层间的空气；然后对多层热塑性塑料片材层叠而成的片材组合体进行同步携带式热成型，使面状的片材组合体成型为具有袋腔体的一体式塑料袋多层组合体；如图3所示，同步携带式热成型，包括：将片材组合体1与弹性携带垫3进行压紧贴合；将片材组合体1加热至软化状态；通过流体压力，使弹性携带垫3在成型腔体2内弹性膨胀；通过设定弹性携带垫3每处位置的弹性系数，控制弹性携带在成型腔体2内停止膨胀后每处位置的变薄率；利用片材组合体被动跟随弹性携带垫形变，使片材组合体的每处位置一一对应着弹性携带垫的每处位置产生同样的减薄率；通过片材组合体每处位置的变薄拉伸量累积，最终在成型腔体内成型出具有袋腔体的一体式塑料袋多层组合体7；
以同步携带式热成型为原理依据，以一体式塑料袋多层组合体的袋腔体预设的形状和厚度均 匀度为目标，设定弹性携带垫每处位置的弹性系数。
图3中，同步组合体6，是指弹性携带垫3与片材组合体1压紧贴合后的一种组合。
袋腔体是指：袋子的结构中，用于盛放物品的立体的腔体。
流体压力是指：气压或液压。
成型腔体是指：依据一体式塑料袋多层组合体的形状，对应设置的阴模，片材组合体在成型腔体内形成一体式塑料袋多层组合体。
变薄率是指：厚度变化，减小的速度。
变薄拉伸量是指：片材组合体被弹性携带垫携带着拉伸形变，每处位置的总体积没有变，厚度减薄，而表面积增大；变薄拉伸量就是指因为变薄导致的表面积增大量。
弹性携带垫每个位置的弹性系数的设定，可以通过下述两种方式实现。
1、实现弹性携带垫每个位置的弹性系数的设定，通过每个位置的材质的弹性模量设定。
2、实现弹性携带垫每个位置的弹性系数的设定，通过每个位置的材质的厚度设定。
弹性携带垫，本身应该具有的性质：
1、耐热性，其能够承受组合体加热至软化状态的温度。
2、具有较强的弹性形变能力。片材组合体成型的形变量，在其弹性携带垫的弹性形变能力之内。
综上两条，弹性携带垫可以选择硅胶、经过改良的高弹性耐温橡胶等。
正是有了弹性携带垫，主动调控成型过程中片材组合体每处位置的减薄率，才实现了够精确控制一体式塑料袋多层组合体成型厚度均匀度。通过一体式塑料袋多层组合体的形状和厚度均匀度这两个生产前要设定产品参数，可以数学计算出片材组合体成型为一体式塑料袋多层组合体过程中每处位置的减薄拉伸量，根据此减薄拉伸量，就能通过弹性力学、微积分或者计算机仿真软件等现有技术知识，计算出弹性携带垫每处位置的弹性系数。
对于片材组合体而言，相邻热塑性塑料片材之间的填充物，一方面要防止热塑性塑料片材受热软化后粘接，另一方面，还能占据热塑性塑料片材之间的空间，尽可能消除热塑性塑料片材之间的空气。
热塑性塑料片材本身为平面状，热塑性塑料片材可以由吹膜法或者压延法等工艺获得，热塑性塑料片材叠放前或者叠放过程中，加入填充物，防止粘接的填充物可以选择二甲基硅油、氟树脂粉末、滑石粉、云母粉等，本领域技术人员可以根据一体式塑料袋本身的材料以及使用场景去选定。加入填充物后，热塑性塑料片材叠放成片材组合体时，可以对片材组合体进行滚压，将热塑性塑料片材之间的空气压出，并保持热塑性塑料片材间的密封状态。 在填充物为液体的情况下，也可以利用液体自行填充，将空气排出，不再需要滚压。最终形成的片材组合体，层层热塑性塑料片材之间空气近乎排尽，这样在真空吸塑过程中，不会因为气泡的膨胀而造成层间位移，使厚度不均匀。
发明内容
本发明所要解决的技术问题，是针对上述存在的技术不足，提供一种一体式塑料袋多层组合体。
本发明采用的技术方案是：一体式塑料袋多层组合体，包括以套层结构分布的多层一体式塑料袋；每层一体式塑料袋均为一体式结构；每相邻的两层一体式塑料袋之间填充有防止层间粘接的填充物；每相邻的两层一体式塑料袋均同心对齐且贴紧密合；一体式塑料袋多层组合体的置物腔的侧壁或底部设置有容积备用区；所述容积备用区用于一体式塑料袋从置物桶中提离时释放可用容积。
进一步优化本技术方案，一体式塑料袋多层组合体的边缘区域设置有封装机构。
进一步优化本技术方案，一体式塑料袋多层组合体的边缘区域设置有提手机构。
本发明与传统塑料袋相比，一体式塑料袋多层组合体的技术效果是：
1、一体式塑料袋的一体式结构的技术效果：a、节约原材料：一体式结构没有压接边缘，不产生因为压接边缘造成的边角废料。b、不易破损：一体式结构没有压接边缘，通体平整，不会出现压接边缘撕裂的情况，不易破损。c、容易造型：一体式结构能够实现规则的立体造型而不出现折面。
2、填充物能够防止一体式塑料袋层间粘接，在层间剥离时不会粘接在一起造成撕裂，还能够减小层层剥离的阻力。
3、在单层的一体式塑料袋一体式结构的基础上，每相邻的两层一体式塑料袋同心对齐且贴紧密合，也就是说相对内外层的两层一体式塑料袋的尺寸差恰好合适，既不会产生褶皱也不会产生空隙，这样能够确保内层一体式塑料袋的可用容积、降低使用过程中的破损概率、有助于提升一体式塑料袋多层组合体运输存放的空间利用率。如果内层相对尺寸小，则导致一体式塑料袋多层组合体出现层间间隙，导致松散的情况，并且层间间隙还会导致在使用时出现破损；如果内层相对尺寸大，则内层会出现褶皱，褶皱在每层中累计，也会导致层间间隙，出现松散破损的问题。另外，褶皱和间隙的存在，会导致内层一体式塑料袋可用容积减小的情况；还会导致一体式塑料袋多层组合体的整体占用体积增加，不利于运输和存放。
容积备用区用于一体式塑料袋从置物桶中提离时释放可用容积，容积备用区可以补偿一体式塑料袋从置物腔内提离后，一体式塑料袋收口时的容积缩减量。封装机构的作用是防止多层一体式塑料袋松散，使多层一体式塑料袋在边缘区域连接在一起；还能够确保一体 式塑料袋能够撕取下来。提手机构可以方便使用者提取一体式塑料袋。
附图说明
图1为封装机构中热压线和撕断线的示意图；
图2为封装机构中断续热压线的示意图；
图3为背景技术中，同步携带式热成型的演示图；
图4为封装机构中粘接线的示意图；
图5为提手机构中内侧冲切提手的示意图；
图6为提手机构中外侧冲切提手的示意图；
图7为提手机构中抽绳提手的示意图；
图8为具有边缘区域的一体式塑料袋示意图；
图9为一体式塑料袋在置物桶内的工作状态示意图；
图10为体积预备区的形状种类示意图；
图11为一体式塑料袋在置物桶内，体积预备区容积释放的示意图；
图中，1、片材组合体；2、成型腔体；3、弹性携带垫；4、流体加压装置；5、加热装置；6、同步组合体；7、一体式塑料袋多层组合体；8、一体式塑料袋；9、翻折备用区；10、桶内装载区；11、置物桶；12、体积预备区；13、凸起备用区；14、边缘区域；15、热压线；16、撕断线；17、断续热压线；18、粘接线；19、冲切提手；20、抽绳提手；21、抽绳；22、缺口。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
一体式塑料袋多层组合体7，包括以套层结构分布的多层一体式塑料袋8；每层一体式塑料袋8均为一体式结构；每相邻的两层一体式塑料袋8之间填充有防止层间粘接的填充物；每相邻的两层一体式塑料袋8均同心对齐且贴紧密合；一体式塑料袋多层组合体7的置物腔的侧壁或底部设置有容积备用区；所述容积备用区用于一体式塑料袋从置物桶11中提离时释放可用容积。
如附图8所示，一体式塑料袋8的一体式结构，是指整个塑料袋是一个整体，没有任何拼接。
一体式塑料袋8的使用顺序是先用最内层，最内层放入物品后将其取出，依次向外层使用。在依次取出内层一体式塑料袋时，从内层一体式塑料袋的边缘进行剥离。
每相邻的两层一体式塑料袋之间填充有防止层间粘接的填充物。防止粘接的填充物可以选择二甲基硅油、氟树脂粉末、滑石粉、云母粉等，本领域技术人员可以根据一体式塑 料袋本身的材料以及使用场景去选定。
容积备用区的位置可以设置在一体式塑料袋多层组合体的侧壁，还可以设置在一体式塑料袋多层组合体的底部。
1、设置在侧壁时：如图8所示，一体式塑料袋多层组合体的侧壁在竖直方向分为上部的翻折备用区9和下部的桶内装载区10；翻折备用区9的侧壁周长大于桶内装载区10的周长；一体式塑料袋多层组合体结合置物桶使用时，翻折备用区9翻折在置物桶11的置物腔开口外部；桶内装载区10位于置物桶11的置物腔内。
如图9所示，桶内装载区10可以与置物桶11的置物腔贴合设置；翻折备用区9翻折在置物桶11的外壁上部。
2、设置在底部时：一体式塑料袋多层组合体的底面设置有凸起的体积预备区12；所述的体积预备区12用于一体式塑料袋从置物桶11中提离时释放可用容积。
如图10所示，体积预备区12的可以为如下形状。
置物桶11的置物腔底部可以平整的，体积预备区12在置物腔的底部会出现褶皱。置物桶11的置物腔底部还可以向上凸起设置有凸起备用区13。体积预备区12与凸起备用区13吻合设置。这样，一体式塑料袋从置物桶中提离时，体积预备区12就会向下回落，释放的容积为体积预备区12占用区域体积的两倍。
如图11所示，体积预备区释放的体积用于补偿一体式塑料袋收口时的容积缩减量。一体式塑料袋收口时的容积缩减量，取决于所盛放物品的状态，比如液态、粉末状固体颗粒、碎纸屑等使用环境。所以体积预备区的大小，应该根据实际的使用环境进行设置。
进一步优化本技术方案，一体式塑料袋多层组合体的边缘区域14设置有封装机构。
如图8所示，边缘区域14的理解：一体式塑料袋是一体式结构，其唯一的边缘在一体式塑料袋的上端开口处；上端开口是指在一体式塑料袋伸展状态下的上端开口，不是指在运输、储藏或使用状态下的折叠后的上端开口。
封装机构的方式可以分为如下几种
1、如图1所示，封装机构包括：连接每层一体式塑料袋边缘区域14的一周热压线15，在热压线15的内侧，每层一体式塑料袋8边缘区域14均设置有撕断线16。
热压线15是将每层一体式塑料袋在边缘区域14连接起来，热压为一体。热压线将所有每层一体式塑料袋固定起来，防止松散；另一方面也方便一体式塑料袋多层组合体固定在用于放置它的储物桶内；再一方面，热压线能够促进一体式塑料袋由内到外逐层撕取的次序，降低撕取时错层、隔层、连带撕取的可能性。
撕断线16顾名思义，作用是一体式塑料袋在撕断线处撕断，这样能将一体式塑料袋 取出，使用方便。
每层一体式塑料袋的撕断线的位置可以相同，也可以不同；当然位置相同时易于生产。撕断线可以是冷冲断线，也可以是热切断线；撕断线为冷冲断线时，在撕断线处容易进入空气，一体式塑料袋的层间贴紧密合需要依靠填充物、自身应力保持；撕断线为热切断线时，撕断线处不会进入空气，进一步增强一体式塑料袋层间的贴紧密合的保持能力。
在最外层一体式塑料袋的撕断线处或者撕断线的内侧，可以设置密封贴；密封贴可以贴合在放置一体式塑料袋多层组合体的储物桶的上端面上，防止空气进入储物桶与最外层一体式塑料袋之间的间隙中。
2、如图2所示，封装机构包括：连接每层一体式塑料袋边缘区域的一周断续热压线17。
断续热压线17与1中的撕断线不同，一体式塑料袋在撕断线处是断开，而在断续热压线处是能够剥离而不会断开；本领域技术人员可以通过调整断续热压线的热压点密度、大小或间距去实现断续热压线的功能。
一体式袋多层组合体在断续热压线处，可能会进去空气，一体式塑料袋的层间贴紧密合需要依靠填充物、自身应力保持。
最外层一体式塑料袋的断续热压线处或者内侧，可以设置密封贴；密封贴可以贴合在放置一体式塑料袋多层组合体的储物桶的上端面上，防止空气进入储物桶与最外层一体式塑料袋之间的间隙中。
3、如图4所示，封装机构包括：连接每层一体式塑料袋边缘区域的一周粘接线18。粘接线与断续热压线不同，粘接线即能够将每层一体式塑料袋边缘区域连接，还能够通过外力剥离，更重要的是在粘接线处，空气不会进入到一体式塑料袋层间去。
最外层一体式塑料袋粘接线处或者粘接线外侧，可以设置密封贴，密封贴可以贴合在放置一体式塑料袋多层组合体的储物桶的上端面上，防止空气进入储物桶与最外层一体式塑料袋之间的间隙中。
由内层到外层，一体式塑料袋的粘接线的粘接力，可以设置为逐层增强。这样撕取时可以促进逐层撕取，降低错层、隔层、连带撕取的可能性。
实施例3
进一步优化本技术方案，一体式塑料袋多层组合体的边缘区域14设置有提手机构。
提手机构可以是在边缘区域冲切出来的冲切提手，还可以是抽绳提手。
1、提手机构为冲切提手19。在具有封装机构的情况下，冲切提手的位置可以结合撕断线的位置设置；撕断线可以是环绕一体式塑料袋边缘区域完全一周设置，还可以不完全一 周、留有空缺的设置。
如图5所示，在热压线的内侧，每层一体式塑料袋边缘区域均设置冲切提手。冲切提手的作用是方便使用者逐层的剥离、提取一体式塑料袋；如图6所示，冲切提手的结构，在撕断线留有空缺的位置向外侧延伸出冲切提手。
2、提手机构为抽绳提手20。
如图7所示，在具有封装机构的情况下，撕断线环绕一体式塑料袋边缘区域一周设置；在撕断线的内侧，每层一体式塑料袋边缘区域环绕一周封装有抽绳21；在抽绳的封装面上至少设置有一处露出抽绳的缺口22。
抽绳具有易于携带，收紧袋口的作用，其使用效果远远好于冲切提手，但是抽绳会增大生产难度，提高生产成本。抽绳的封装，由封装面与一体式塑料袋边缘区域夹层封装实现。缺口的作用是方便抽绳的提取。
提手机构与封装机构存在配合关系的原因是两者均在一体式塑料袋边缘区域；提手机构在于封装机构配合时，以能实现两者各自的功能的配合方式为准。比如当封装机构为粘接线或断续热压线时，提手机构应该设置在粘接线或断续热压线的外侧。

Claims (3)

  1. 一种一体式塑料袋多层组合体，其特征在于：包括以套层结构分布的多层一体式塑料袋；每层一体式塑料袋均为一体式结构；每相邻的两层一体式塑料袋之间填充有防止层间粘接的填充物；每相邻的两层一体式塑料袋均同心对齐且贴紧密合；一体式塑料袋多层组合体的置物腔的侧壁或底部设置有容积备用区；所述容积备用区用于一体式塑料袋从置物桶中提离时释放可用容积。
  2. 根据权利要求1所述的一体式塑料袋多层组合体，其特征在于：所述的一体式塑料袋多层组合体的边缘区域设置有封装机构。
  3. 根据权利要求1或2所述的一体式塑料袋多层组合体，其特征在于：所述的一体式塑料袋多层组合体的边缘区域设置有提手机构。
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