A, TCR practicality
TCR- is a new material for shoe soles or shoe midsole - elastic rubber heat controllable, resilient material iT is a new line of new materials company Guangdong Institute of China Leather Research Institute jointly study, known as synthetic stretch plastics and rubber.
Chinese Name: Hot controllable elastic rubber
English name: thermoplastic controlled rubber
Definition: rubber and EVA dual display excellent physical properties at room temperature, at a high temperature can be plasticized molding polymer elastic material.
Applied science: Materials Science and Technology (a subject); polymer materials (two subjects); rubber and synthetic rubber (two subjects)
Wikipedia card
Thermally controllable elastic rubber TCR, is a new line of elastic material iT new materials company Guangdong Institute of China Leather Research Institute jointly study, known as synthetic rubber highly elastic plastics. Its products not only have the traditional cross-linked vulcanized rubber anti-aging, wear, slip the excellent performance, but also have a lightweight EVA foam and feel. Way using injection molding production, outlet scrap can not be reused. Imports of plastic injection molding machine, not only simplifies the process, and reduce processing costs, and therefore the controllability of elastic rubber heat TCR material has become a new material can replace conventional rubber most competitive of its environmental, non-toxic, feel comfortable , lightweight, attractive appearance, to make products more innovative. Therefore a more humane, high-quality new synthetic material, is the world's standards of environmentally friendly materials.
It has the characteristics
⒈ good impact and fatigue resistance.
⒉ high impact strength and good low temperature flexibility.
Maintain a good performance when ⒊ low temperatures.
⒋ good resistance to chemicals, oil, solvents and weather.
⒌ high tear strength and high abrasion performance.
⒍ low proportion of ultra-light soles give you the feeling of flying.
⒎ good flexibility, with a strong damping effect.
basic information
Currently, thermally controllable elastic rubber material TCR new applications, bonding, etc., are also increasingly important commercial position, it has a broad market potential and unlimited space for development.
Main features
The nine main characteristics:
1, environmental protection, non-toxic, non-polluting (with European nontoxic standard certificate)
2, a simplified production process
3, has excellent resistance to low temperature, high temperature
4, soft touch, excellent surface quality
5, a broad hardness range: 10C-80C
6, the outlet material, scrap can be recycled (EVA foam used as the secondary market)
7, to follow the requirements of customers to adjust the most suitable material for your needs
8, processing non-toxic, but does not produce an unpleasant odor
9, no harm to the environment and equipment
Physical properties
1, a good appearance of texture, feel gentle, easy to color, color uniformity, stability;
2, adjustable physical properties, and provide a vast space for product design;
3, the mechanical properties of comparable vulcanized rubber;
4, 10C-80C wide hardness range adjustable;
5, excellent resistance to tensile properties, tensile strength of up to a dozen Mpa, elongation at break of up to ten times or more;
6, long-term temperature can exceed 70 ℃, good low temperature performance, at a temperature of -60 ℃ still maintain good flexural properties;
7, good electrical insulation resistance and voltage characteristics;
8, with outstanding slip resistance, abrasion resistance and weather resistance.
9, low specific gravity, light brings a relaxed feeling.
10, enhance the market competitiveness of your product
Thermally controllable elastic rubber has physical and mechanical properties of vulcanized rubber and lightweight plastic (EVA) double performance. The modern concept of consumption, is no longer "dragging heavy feet" but "soft - comfortable - lightweight - fashion"
Compared to other materials performance comparison as follows:
Property
Material
Elasticity
Ageing
Toxicity
Proportion
Wear
Slip
PVC
Difference
Difference
Have
Difference
Difference
Difference
TPR
General
Difference
Have
Worst
Difference
Difference
TPU
Difference
Okay
Okay
Difference
Difference
Difference
PU
General
Difference
No
General
Difference
Difference
EVA (Normal)
Okay
Okay
No
Best
Okay
General
TCR
Best
Optimal
No
Adjustable
Good
Good
RB (Rubber)
Poor
Okay
No
General
Best
Best
Rubber foam
Okay
Better
No
Better
Okay
Okay
With respect to the rubber soles of performance comparison of four commonly used as follows:
Property
Material
Elasticity
Winding resistance
Hardness
Proportion
Wear
Slip
TCR
60% (MAX)
120,000 times
10 to 70
0.40
90 to 150
0.5 (MAX)
RB
30% (MAX)
100,000 times
45 to 75
1.12
70 to 180
0.7 (MAX)
Foam rubber
25% (MAX)
20,000 times
70 to 90
0.60
200 ~ 300
0.4 (MAX)
EVA
40% (MAX)
100,000 times
45 to 80
0.22
250 to 400
0.25 (MAX)
Contrast can be seen above, the overall performance index is, TCR do have other incomparable superiority will become mainstream in the future market of high-end shoes.
Two, TCR production process
Ingredients → mixing → granulating → injection → → foam molding mold vulcanization → thermostat setting → dimensional inspection
→ standing 24H → finishing trimming → secondary inspection → packaging → warehousing → shipping
Third, the raw material formulation
1. Special rubber tires + Main + + lightweight high elastic rubber modified chest (the main material 80%)
2. filler (10%)
3. aid (6%)
The processing lubricant (2%)
5. The foaming agent (1%)
6. masterbatch (1%)
Five, TCR proportion shoe, status and future.
Before the 1990s, the domestic market is mainly PVC soles or soles vulcanized sole, by the mid-1990s, along with the deepening of reform and opening up, Taiwanese and other foreign enterprises in large quantities into the mainland shoe, so lightweight sole (EVA) in mainland China The rise, especially in the athletic footwear market, accounting for 90% of lightweight EVA sole athletic footwear market, such as Li Ning, Anta, 361 .... and other well-known brand sports shoes. However, casual shoes in this market because of a problem in consumption concept is still occupying nearly 95% of the market by a rubber sole.
New materials --TCR 08 年 iT line developed in cooperation with the China Leather Research Institute, set the EVA lightweight, wear elastic and rubber, non-slip characteristics. After several years of efforts to promote, currently accounts for 5 percent of the market share of casual shoes lightweight soles. As can be seen from the last two years, the sale of brand consumer statistics, TCR sole market share is 200% of the rate to show, while the domestic consumption of shoes on the billion pairs a year, so the market is very broad TCR.
Six, with TCR sole shoes, compared with other materials, its biggest feature lies in the high flexibility and lightweight comfort. Currently well-known second-tier brands have begun to vigorously using TCR end, such as the internationally renowned: brand ECCO, Callaghan, Prada domestic famous brands: thousands of Baidu, SKAP, HOTWIND like.
Seven, TCR mold standard process
1. Development
2D → 3D → programming → wooden mold (first board) → shrinking mold
2 ,. milling machine:
Casting back to the factory → milling plane (should be more than cover benevolence 3:00 school level) → drilling →
Book wire sawing → milling → → volume die size (for use of the CNC)
3. Modified:
CNC machining complete mold → → discharge of mold (appearance modification) → fit within benevolence →
Milling playing Nehren hole drilling milling → → → pull within benevolence hit dense exhaust ditch →
Marked with numbers → sandblasting
4.TCR mold Advancement
TCR mold made of aluminum, so fast heat conduction, finished surface pattern clear analysis, strong visual effects. Also requires very high precision, the error values are accurate to 0.05mm.