CN204955399U - Crowd film blowing mechanism altogether from mucosa three -layer - Google Patents
Crowd film blowing mechanism altogether from mucosa three -layer Download PDFInfo
- Publication number
- CN204955399U CN204955399U CN201520711421.5U CN201520711421U CN204955399U CN 204955399 U CN204955399 U CN 204955399U CN 201520711421 U CN201520711421 U CN 201520711421U CN 204955399 U CN204955399 U CN 204955399U
- Authority
- CN
- China
- Prior art keywords
- runner
- sleeve
- layer material
- outer skin
- skin materials
- 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.)
- Active
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a crowd film blowing mechanism altogether from mucosa three -layer, includes the inside and outside sleeve that each other overlaps and arrange with one heart of four layers, the quantity of the radial subchannel of outer material equals 12 of outer material spiral groove runner quantity, the telescopic lower extreme of third is formed with oblique bottom surface, the radial subchannel of this oblique bottom surface outer material of orientation, and this oblique bottom surface has offered the bottom surface opening, and every bottom surface opening corresponds the distal end of aiming at a radial subchannel of outer material, it has inside oblique flow way to dig in the telescopic barrel of third, and the quantity of inside oblique flow way is the same with the quantity of outer material spiral groove runner, and each bottom surface opening corresponds connects two inside oblique flow ways, and these two inside oblique flow ways form the V font, and the bottom point of V font is the bottom surface opening promptly, and the upper end correspondence that each inside oblique flow said communicates an outer material spiral groove runner. The utility model discloses can be under the prerequisite of ensureing disappearance ripples line outward appearance texture, reduce to reduce the thickness of tie coat by a wide margin.
Description
Technical field
The utility model belongs to the technical field of plastic foil production equipment, is specifically related to the three-layer co-extruded film-blowing die head of a kind of self-adhesive film.
Background technology
Self-adhesive film, also known as adhesive protecting film, has easy laminating, easily opens, opens the advantage of rear body surface noresidue bonding material, be widely used in the surface protection of the object such as the electric appliance and electronic such as mobile phone, computer equipment and plastics, glass, building materials.Common self-adhesive film structurally comprises three layers, and wherein outermost layer is the tack coat with stickiness, and during use, tack coat is pasted on protected object surface.
Self-adhesive film can adopt three coextrusion film blowing equipment to produce, and the core component of three-layer co-extruded film blowing device is three-layer co-extruded film-blowing die head.
Shown in Fig. 1, Fig. 2, Fig. 3, that three-layer co-extruded blown-film die to have inside and outside four layers a cover mutually and concentric sleeve of arranged concentric, be followed successively by the first sleeve 1, second sleeve 2, the 3rd sleeve 3, the 4th sleeve 4 from inside to outside, leave gap diametrically between every inside and outside adjacent two sleeve first halves and form annular gap, each annular gap is communicated to annular die orifice 8 respectively; Also dig at the cylindrical shape interface of the first sleeve 1 and the second sleeve 2 and be formed with some internal layer material spiral groove runners 31, also dig at the cylindrical shape interface of the second sleeve 2 and the 3rd sleeve 3 and be formed with some articles of intermediate layer material spiral groove runners 32, dig at the cylindrical shape interface of the 3rd sleeve 3 and the 4th sleeve 4 and be formed with some articles of outer skin materials spiral groove runners 33, every bar spiral groove runner 31(32) (33) be all provided with a charging aperture 60 in bottom.In prior art, each charging aperture 60 correspondence is provided with a radial runner 21(22) (23), each bar radial runner 21(22) proximal part of (23) is connected with vertical center flow channels 11(12) (13), the center flow channels 11(12 of each layer material) (13) be all positioned on the central axis of head, outer skin materials center flow channels 13, intermediate layer material center runner 12, the floor projection position of internal layer material center runner 11 is positioned at die head center, and from vertical position, outer skin materials center flow channels 13 is arranged in bottom, the center flow channels 11 of internal layer material is arranged in the top, intermediate layer material center runner 12 is arranged in vertical centre position, in addition, annular die orifice 8 is generally arranged in directly over the spiral groove runner 4 in intermediate layer, as shown in Figure 3.
During work, each layer fused materials is through respective center flow channels 11(12) (13) uniform distribution enters each radial runner 21(22) (23), then the charging aperture 60 through each spiral groove runner enters along each spiral groove runner 31(32) (33), then rise along each spiral groove runner rotating, in the flow process risen along each spiral groove runner rotating, fused materials is continuous annular gap upwards leakage current between every two-layer concentric sleeve also, as illustrated by the arrows in fig. 1, rise along with material rotates, material ratio along helical flow path axial advancement is more and more less, and annularly the material ratio of gap upwards leakage current is increasing, final each layer fused materials all launches to become an annulus from original several points (charging aperture 60), reach the object of uniform distribution in the circumferential, and extrude from the top annular die orifice 8 of annular gap, form the film bubble of annular, film bubble is through inflation, just self-adhesive film is become after cutting.
If the three-layer co-extruded film-blowing die head of above-mentioned existing structure is applied to production self-adhesive film, then there is many problems.Specifically, outermost layer material (tack coat) material expensive of self-adhesive film film bubble, therefore consumption is few, and thickness is thin, and the cross section of fluid channel of convey materials is relatively little, particularly after being separated into many radial runners from center uniform flow passage, the cross section of each radial runner more seems very little, and the length of radial runner is long, therefore large (the so-called wetted area of wetted area, be generic term in row, refer to the gross area that water passage surface contacts with fused materials).
Because the cross section of fluid channel of tack coat is little, fused materials flow is few, wetted area is but very large, and tack of materials is large, so tack coat is after flowing through long and narrow radial runner, pressure acutely declines, during final arrival annular die orifice, the pressure of tack coat is much smaller compared with other two-layer fused materials, when tack coat and other layer of material are jointly extruded in annular die orifice, tack coat can can't bear other layer of fused materials extruding and produce irregular corrugated outward appearance texture, these irregular corrugated textures can have a strong impact on mobile phone, the affixed object surfaces such as computer attractive in appearance.
In order to solve the problem, in prior art, generally can only be solved by the mode in increasing outermost material thickness, increasing outermost layer material flow path cross section.But in existing production practices, only have when adhesive layer thickness reaches about 20% of self-adhesive film integral thickness, irregular corrugated texture could be eliminated, and so thick tack coat is far beyond self-adhesive film product actual needs in use, that is, due to production equipment, production process, there is the too high problem of outer layer thickness ratio in existing self-adhesive film always, but thickening of tack coat does not have anything to act in self-adhesive film use procedure, wastes cost.
Utility model content
The purpose of this utility model provides a kind of self-adhesive film three-layer co-extruded film-blowing die head overcoming above-mentioned shortcoming, and it significantly can reduce the thickness of tack coat and avoid occurring corrugated outward appearance texture.
Its object can realize by following scheme: the three-layer co-extruded film-blowing die head of this self-adhesive film comprises mutual cover inside and outside four layers and the sleeve of arranged concentric, be followed successively by the first sleeve, the second sleeve, the 3rd sleeve, the 4th sleeve from inside to outside, leave gap diametrically between every inside and outside adjacent two sleeve first halves and form annular gap, each annular gap is communicated to annular die orifice respectively; Some internal layer material spiral groove runners are formed in the cylindrical shape interface cutting of the first sleeve and the second sleeve, be formed with some articles of intermediate layer material spiral groove runners in the cylindrical shape interface cutting of the second sleeve and the 3rd sleeve, be formed with some articles of outer skin materials spiral groove runners in the cylindrical shape interface cutting of the 3rd sleeve and the 4th sleeve; Also be provided with outer skin materials center flow channels, intermediate layer material center runner, internal layer material center runner, the floor projection position of outer skin materials center flow channels, intermediate layer material center runner, internal layer material center runner is positioned at die head center;
Outer skin materials center flow channels is connected with the radial runner of outer skin materials of some the distributions in homogeneous radiation shape, intermediate layer material center runner is connected with the radial runner of intermediate layer material of some the distributions in homogeneous radiation shape, and internal layer material center runner is connected with the radial runner of internal layer material of some the distributions in homogeneous radiation shape; The distal end correspondence of the radial runner of each intermediate layer material is communicated to an intermediate layer material spiral groove runner, the distal end correspondence of the radial runner of each internal layer material is communicated to an internal layer material spiral groove runner, it is characterized in that, the quantity of the radial runner of described outer skin materials equals 1/2 of outer skin materials spiral groove runner quantity; The lower end of the 3rd sleeve is formed with inclined end face, and this inclined end face is towards the radial runner of outer skin materials, and this inclined end face offers bottom surface opening, the distal end of each bottom surface opening alignment radial runner of outer skin materials;
Dig in the cylindrical shell of the 3rd sleeve and have inner inclined flow passage, the quantity of inner inclined flow passage is identical with the quantity of outer skin materials spiral groove runner, each bottom surface opening correspondence connects two inner inclined flow passages, these two inner inclined flow passages form V-shaped, the bottom point of V-shaped is bottom surface opening, and the upper end correspondence of each inner inclined flow passage is communicated to an outer skin materials spiral groove runner.
Outer skin materials center flow channels is positioned at the top of intermediate layer material center runner and internal layer material center runner.
Outer skin materials spiral groove runner is positioned at immediately below annular die orifice.
The utility model has the following advantages and effect:
The utility model can avoided under the prerequisite occurring corrugated outward appearance texture, and significantly reduce the thickness of tack coat, concrete reason is as follows:
One, the quantity of the radial runner of outer skin materials equals 1/2 of outer skin materials spiral groove runner quantity; When only having by the time close to outer skin materials spiral groove runner, just utilizing the 3rd sleeve to be divided into two expansion in cylindrical shell, therefore compared with traditional structure, the cross section of the radial runner of the utility model outer skin materials is large, wetted area is little, reduces flow process viscous force;
Two, outer skin materials center flow channels is positioned at the top of intermediate layer material center runner and internal layer material center runner, therefore compare with traditional structure, the projected length of the radial runner of outer skin materials on vertically can be reduced, mean the physical length reducing the radial runner of outer skin materials.
Three, annular die orifice is positioned at directly over outer skin materials spiral groove runner, therefore compare with traditional structure, the radical length of the radial runner of outer skin materials in floor projection can be reduced, mean the physical length reducing the radial runner of outer skin materials from another point of view.
Due to the reason of above-mentioned three aspects, the utility model significantly can reduce the pressure loss decline degree of skin (tack coat) fused materials in radial runner, and then can guarantee under the prerequisite not occurring water ripples outward appearance texture, significantly reduce the thickness reducing tack coat.
Accompanying drawing explanation
Fig. 1 is helical flow path structure and the operation principle schematic diagram of three-layer co-extruded film-blowing die head.
Fig. 2 is fused materials is evenly distributed to radial runner by three-layer co-extruded film-blowing die head structural representation from center flow channels.
Fig. 3 is the cross-sectional view of existing a kind of three-layer co-extruded film-blowing die head.
Fig. 4 is the cross-sectional view of a kind of specific embodiment of the utility model.
Fig. 5 is the cross-sectional view of the 3rd sleeve in Fig. 4.
Fig. 6 is A close-up schematic view in Fig. 5.
Fig. 7 is the three-dimensional appearance schematic diagram of the 3rd sleeve shown in Fig. 5.
Fig. 8 is the runner facade perspective diagram of the 3rd sleeve shown in Fig. 5.
Fig. 9 is the runner Hrizontal perspective schematic diagram of the 3rd sleeve shown in Fig. 5.
Detailed description of the invention
Shown in Fig. 4, the three-layer co-extruded film-blowing die head of this self-adhesive film comprises mutual cover inside and outside four layers and the sleeve of arranged concentric, be followed successively by the first sleeve 1, second sleeve 2, the 3rd sleeve 3, the 4th sleeve 4 from inside to outside, leave gap diametrically between every inside and outside adjacent two sleeve first halves and form annular gap, each annular gap is communicated to annular die orifice 8 respectively; Also dig at the cylindrical shape interface of the first sleeve 1 and the second sleeve 2 and be formed with 16 internal layer material spiral groove runners 31, also dig at the cylindrical shape interface of the second sleeve 2 and the 3rd sleeve 3 and be formed with 16 articles of intermediate layer material spiral groove runners 32, dig at the cylindrical shape interface of the 3rd sleeve 3 and the 4th sleeve 4 and be formed with 16 articles of outer skin materials spiral groove runners 33; Outer skin materials spiral groove runner 33 is positioned at immediately below annular die orifice 8; Also be provided with outer skin materials center flow channels 11, intermediate layer material center runner 12, internal layer material center runner 13, the floor projection position of outer skin materials center flow channels 11, intermediate layer material center runner 12, internal layer material center runner 13 is positioned at die head center; Outer skin materials center flow channels 13 is positioned at the top of internal layer material center runner 11, and internal layer material center runner 11 is positioned at the top of intermediate layer material center runner 12; Outer skin materials center flow channels 13 is connected with the radial runner 23 of outer skin materials of eight distributions in homogeneous radiation shape, and the quantity of the radial runner 23 of outer skin materials equals 1/2 of outer skin materials spiral groove runner 33 quantity; Intermediate layer material center runner 12 is connected with the radial runner 22 of intermediate layer material of 16 distributions in homogeneous radiation shape, and internal layer material center runner 11 is connected with the radial runner 21 of internal layer material of 16 distributions in homogeneous radiation shape; The distal end correspondence of the radial runner 22 of each intermediate layer material is communicated to an intermediate layer material spiral groove runner 32, and the distal end correspondence of the radial runner 21 of each internal layer material is communicated to an internal layer material spiral groove runner 31.
Shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, the lower end of the 3rd sleeve 3 forms inclined end face 5, this inclined end face 5 is towards the radial runner 23 of outer skin materials, and this inclined end face 5 offers bottom surface opening 50, the distal end of the radial runner 23 of each bottom surface opening 50 alignment outer skin materials; Dig in the cylindrical shell of the 3rd sleeve 3 and have inner inclined flow passage 51, the quantity of inner inclined flow passage 51 is 16, identical with the quantity of outer skin materials spiral groove runner 33; Each bottom surface opening 50 correspondence connects two inner inclined flow passages 51, these two inner inclined flow passages 51 form V-shaped, the bottom point of V-shaped is bottom surface opening 50, and the upper end correspondence of each inner inclined flow passage 51 is communicated to an outer skin materials spiral groove runner 33.
Above-described embodiment in the course of the work, outermost layer (tack coat) fused materials enters eight radial runners 23 of outer skin materials through outer skin materials center flow channels 13 distribution, then the inner inclined flow passage 51 of inflow 16 is divided into two, again through 16 outer skin materials spiral groove runners 33 upwards flow distribution, finally arrive annular die orifice 8; The type of flow of interlayer melted material, internal layer fused materials is identical with traditional structure.
Claims (3)
1. the three-layer co-extruded film-blowing die head of self-adhesive film, comprise inside and outside four layers and overlapping mutually and the sleeve of arranged concentric, be followed successively by the first sleeve, the second sleeve, the 3rd sleeve, the 4th sleeve from inside to outside, leave gap diametrically between every inside and outside adjacent two sleeve first halves and form annular gap, each annular gap is communicated to annular die orifice respectively; Some internal layer material spiral groove runners are formed in the cylindrical shape interface cutting of the first sleeve and the second sleeve, be formed with some articles of intermediate layer material spiral groove runners in the cylindrical shape interface cutting of the second sleeve and the 3rd sleeve, be formed with some articles of outer skin materials spiral groove runners in the cylindrical shape interface cutting of the 3rd sleeve and the 4th sleeve; Also be provided with outer skin materials center flow channels, intermediate layer material center runner, internal layer material center runner, the floor projection position of outer skin materials center flow channels, intermediate layer material center runner, internal layer material center runner is positioned at die head center;
Outer skin materials center flow channels is connected with the radial runner of outer skin materials of some the distributions in homogeneous radiation shape, intermediate layer material center runner is connected with the radial runner of intermediate layer material of some the distributions in homogeneous radiation shape, and internal layer material center runner is connected with the radial runner of internal layer material of some the distributions in homogeneous radiation shape; The distal end correspondence of the radial runner of each intermediate layer material is communicated to an intermediate layer material spiral groove runner, the distal end correspondence of the radial runner of each internal layer material is communicated to an internal layer material spiral groove runner, it is characterized in that: the quantity of the radial runner of described outer skin materials equals 1/2 of outer skin materials spiral groove runner quantity; The lower end of the 3rd sleeve is formed with inclined end face, and this inclined end face is towards the radial runner of outer skin materials, and this inclined end face offers bottom surface opening, the distal end of each bottom surface opening alignment radial runner of outer skin materials;
Dig in the cylindrical shell of the 3rd sleeve and have inner inclined flow passage, the quantity of inner inclined flow passage is identical with the quantity of outer skin materials spiral groove runner, each bottom surface opening correspondence connects two inner inclined flow passages, these two inner inclined flow passages form V-shaped, the bottom point of V-shaped is bottom surface opening, and the upper end correspondence of each inner inclined flow passage is communicated to an outer skin materials spiral groove runner.
2. the three-layer co-extruded film-blowing die head of self-adhesive film according to claim 1, is characterized in that: outer skin materials center flow channels is positioned at the top of intermediate layer material center runner and internal layer material center runner.
3. the three-layer co-extruded film-blowing die head of self-adhesive film according to claim 1 and 2, is characterized in that: outer skin materials spiral groove runner is positioned at immediately below annular die orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711421.5U CN204955399U (en) | 2015-09-15 | 2015-09-15 | Crowd film blowing mechanism altogether from mucosa three -layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711421.5U CN204955399U (en) | 2015-09-15 | 2015-09-15 | Crowd film blowing mechanism altogether from mucosa three -layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204955399U true CN204955399U (en) | 2016-01-13 |
Family
ID=55050490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520711421.5U Active CN204955399U (en) | 2015-09-15 | 2015-09-15 | Crowd film blowing mechanism altogether from mucosa three -layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204955399U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214940A (en) * | 2017-06-30 | 2017-09-29 | 大连橡胶塑料机械有限公司 | Head concentrates center current divider |
| CN109291394A (en) * | 2018-11-20 | 2019-02-01 | 常州金纬管道设备制造有限公司 | The three-layer co-extruded spiral mould of PE tubing and its charging distribution method |
| CN114829105A (en) * | 2019-10-15 | 2022-07-29 | 考特斯机械制造有限公司 | Extrusion technique and hose forming technique for forming plastic parison |
-
2015
- 2015-09-15 CN CN201520711421.5U patent/CN204955399U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214940A (en) * | 2017-06-30 | 2017-09-29 | 大连橡胶塑料机械有限公司 | Head concentrates center current divider |
| CN109291394A (en) * | 2018-11-20 | 2019-02-01 | 常州金纬管道设备制造有限公司 | The three-layer co-extruded spiral mould of PE tubing and its charging distribution method |
| CN114829105A (en) * | 2019-10-15 | 2022-07-29 | 考特斯机械制造有限公司 | Extrusion technique and hose forming technique for forming plastic parison |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204955399U (en) | Crowd film blowing mechanism altogether from mucosa three -layer | |
| CN102672954B (en) | Concentric sleeve type multi-layer coextrusion film blowing machine head | |
| CN201117370Y (en) | Double layer coextruded rubber production line mould head | |
| CN105058766A (en) | Combined three-layer co-extrusion inner cold mold head | |
| CN102767651A (en) | Three-wall corrugated pipe and manufacturing equipment thereof | |
| CN209955261U (en) | Composite coating die for 3PE outer corrosion prevention of bent pipe | |
| CN106424186B (en) | A kind of shunting combination hot extruding die | |
| CN204977372U (en) | Double -deck head structure of blowing machine | |
| CN204604855U (en) | A kind of PPR pipe co-extruder head | |
| CN206140857U (en) | Take cooling device's outer cladding mould of tubular product | |
| CN106393628A (en) | TPU-ABS composite board co-extrusion technology | |
| CN205800140U (en) | For producing the superposed multilayer co-extrusion die head of degradable mulch | |
| CN102765179B (en) | Five-layer coextrusion plastic pipe forming die | |
| CN204869572U (en) | Three compound shape of mouth as one speakss of extruding of rubber | |
| CN106626344A (en) | Three-layer co-extruding film blowing die head | |
| CN103322340A (en) | Double-layer co-extrusion polyethylene winding structural wall pipe and production method and equipment thereof | |
| CN207105561U (en) | A kind of double end molten plastic extrusion molding die head | |
| CN105383033A (en) | Multilayer composite coextrusion method and die based on rotary shear layer flow dynamic distribution | |
| CN203994635U (en) | A kind of polyethylene (PE) is three-layer co-extruded goes out mould | |
| CN205816442U (en) | A kind of shunting combination hot extruding die | |
| CN214491622U (en) | 3D prints and uses syringe needle based on coaxial printing | |
| CN207140299U (en) | Multilayer periosteum combined type head | |
| CN103737886A (en) | Multi-corner-angle equilateral PE (poly ethylene) flexible pipe extruding device | |
| CN206154712U (en) | Conical surface stack formula multilayer is crowded film blowing mechanism altogether | |
| CN203198219U (en) | Composite die used for external anti-corrosion coating of steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |