CN111421941A - KPU vamp integrated pressing process - Google Patents
KPU vamp integrated pressing process Download PDFInfo
- Publication number
- CN111421941A CN111421941A CN202010420276.0A CN202010420276A CN111421941A CN 111421941 A CN111421941 A CN 111421941A CN 202010420276 A CN202010420276 A CN 202010420276A CN 111421941 A CN111421941 A CN 111421941A
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- CN
- China
- Prior art keywords
- kpu
- vamp
- semi
- mold
- cured
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/126—Uppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention relates to the technical field of vamps, in particular to an integrated pressing process of a KPU vamp, which comprises the following steps: (1) opening the mold and positioning; (2) injecting a liquid KPU into the vamp part of the vamp mould by using a PU (polyurethane) filling machine, and then semi-curing; (3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails; (4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp. According to the invention, the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth are subjected to hot pressing by utilizing certain cohesive force and hot pressing property after the KPU is semi-cured, so that all levels of materials are firmly bonded together without glue while the KPU is cured, the condition that the joint becomes a weak link and is easily broken by external force is avoided, the product is completely integrated, and the product strength is increased.
Description
Technical Field
The invention relates to the technical field of vamps, in particular to an integrated pressing process of KPU vamps.
Background
At present, the shoe uppers on the market mainly comprise the following parts:
the traditional handmade vamp is a handmade vamp made of traditional mesh, PU leather, real leather and the like;
II, KPU integrated vamp;
thirdly, flying weaving the integrated vamp.
A first conventional hand-made upper: the method is mainly finished by a large amount of handwork and sewing by sewing machine, and a large amount of toxic glue and liquid medicine is used for sticking, so that the method has great harm to human bodies, very low yield and poor product quality. At present, a plurality of small and medium-sized shoe factories are used for producing vamps by hand in an enlarged way, and leather shoes are mainly produced.
A second KPU vamp: the integrated vamp developed in recent years is a vamp formed by forming PU in a vacuum state without foaming, the vamp is more powerful and more innovative than the first vamp in production, but the vamp is not high in popularity due to factors such as complex process, low yield, high cost and the like, and the vamp is only used by part of sports shoes.
The third type flies to knit integrated vamp: the forehead vamp which is knitted by special yarns after being programmed by a computer is a very popular vamp in the last two years, and the novel forehead vamp not only saves labor and time, but also is environment-friendly and light. However, the production equipment has high cost, low yield, single appearance, poor texture and no body removing effect, can only produce materials such as gauze and the like, has great limitation, and is mainly used for sports shoes and cloth shoes at present.
The existing foamed PU vamp is adopted to replace a KPU vamp, materials at all levels are compounded on PU in the PU curing and foaming process, but the curing and foaming process is difficult to control, and the product quality is difficult to guarantee.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the KPU vamp integrated pressing process, all levels of materials are compounded with the KPU after the KPU is semi-cured, the bonding performance is good, and the product quality is ensured.
The purpose of the invention is realized by the following technical scheme:
an integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 60-80 ℃ and the time is 1-2 min.
Wherein the temperature for semi-curing is 65-75 ℃.
Wherein the temperature for semi-curing is 70 ℃ and the time is 1.5 min.
Wherein the temperature of the hot pressing is 80-100 ℃, and the time is 360-420 s.
Wherein the temperature of the hot pressing is 85-95 ℃, and the time is 380-400 s.
Wherein the temperature of the hot pressing is 90 ℃ and the time is 390 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
The invention has the beneficial effects that: according to the invention, the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth are subjected to hot pressing by utilizing certain cohesive force and hot pressing property after the KPU is semi-cured, so that all levels of materials are firmly bonded together without glue while the KPU is cured, the condition that the joint becomes a weak link and is easily broken by external force is avoided, the product is completely integrated, and the product strength is increased.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
An integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 70 ℃ and the time is 1.5 min.
Wherein the temperature of the hot pressing is 90 ℃ and the time is 390 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
Example 2
An integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 60 ℃ and the time is 2 min.
Wherein the temperature of the hot pressing is 80 ℃, and the time is 420 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
Example 3
An integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 80 ℃ and the time is 1 min.
Wherein the temperature of the hot pressing is 100 ℃, and the time is 360 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
Example 4
An integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 65 ℃ and the time is 1.75 min.
Wherein the temperature of the hot pressing is 85 ℃ and the time is 400 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
Example 5
An integrated pressing process of a KPU vamp comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
Wherein the temperature for semi-curing is 75 ℃, and the time is 1.25 min.
Wherein the temperature of the hot pressing is 95 ℃ and the time is 380 s.
Before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (8)
1. An integrated pressing process of KPU shoe uppers is characterized in that: the method comprises the following steps:
(1) opening the die, and nailing the film on the positioning nails at the peripheral edge of the bottom of the die;
(2) injecting a liquid KPU into the vamp part of the vamp mold by using a PU (polyurethane) filling machine, and then semi-curing to obtain a semi-cured KPU;
(3) placing the TPU film, the screen cloth and the microfiber cloth in a mold according to the positions of the positioning nails;
(4) and (3) performing hot-pressing on the semi-cured KPU, the TPU film, the screen cloth and the microfiber cloth which are sequentially placed from bottom to top to obtain the KPU vamp.
2. A KPU shoe upper integrated pressing process according to claim 1, wherein: the temperature for semi-curing is 60-80 ℃, and the time is 1-2 min.
3. A KPU shoe upper integrated pressing process according to claim 2, wherein: the temperature for semi-curing is 65-75 ℃.
4. A KPU shoe upper integrated pressing process according to claim 3, wherein: the temperature for semi-curing is 70 ℃ and the time is 1.5 min.
5. A KPU shoe upper integrated pressing process according to claim 1, wherein: the temperature of the hot pressing is 80-100 ℃, and the time is 360-420 s.
6. A KPU shoe upper integrated pressing process according to claim 5, wherein: the temperature of the hot pressing is 85-95 ℃, and the time is 380-400 s.
7. A KPU shoe upper integrated pressing process according to claim 6, wherein: the temperature of the hot pressing is 90 ℃, and the time is 390 s.
8. A KPU shoe upper integrated pressing process according to claim 1, wherein: before the step (2), the method further comprises a step A of processing the mould: and spraying a mold release agent on the mold, and treating the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010420276.0A CN111421941A (en) | 2020-05-18 | 2020-05-18 | KPU vamp integrated pressing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010420276.0A CN111421941A (en) | 2020-05-18 | 2020-05-18 | KPU vamp integrated pressing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111421941A true CN111421941A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010420276.0A Pending CN111421941A (en) | 2020-05-18 | 2020-05-18 | KPU vamp integrated pressing process |
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| CN (1) | CN111421941A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753753A (en) * | 2014-01-13 | 2014-04-30 | 陈增培 | Upper molding device and process |
| TWM551002U (en) * | 2017-03-20 | 2017-11-01 | Dah Lih Puh Co Ltd | Three-dimensional vamp formation structure for composite layer type three-dimensional shoe body |
-
2020
- 2020-05-18 CN CN202010420276.0A patent/CN111421941A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753753A (en) * | 2014-01-13 | 2014-04-30 | 陈增培 | Upper molding device and process |
| TWM551002U (en) * | 2017-03-20 | 2017-11-01 | Dah Lih Puh Co Ltd | Three-dimensional vamp formation structure for composite layer type three-dimensional shoe body |
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Application publication date: 20200717 |
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| RJ01 | Rejection of invention patent application after publication |