Hinged cap having biodegradability
A biodegradable, hinged lid technology, applied in the field of hinged lids, can solve problems such as broken hinges and reduced hinge strength, and achieve excellent biodegradable effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0063] Poly(DL-lactic acid) resin (hereinafter referred to as "polylactic acid") and polybutylene succinate, which is an aliphatic polyester resin other than polylactic acid, are expressed as (polylactic acid):(polybutylene succinate) in terms of mass ratio. Butylene glycol diacid) = 70:30 for dry blending, and 0.5 parts by mass of erucamide (lubricant) and 1.5 parts by mass of bis(dipropylphenyl) per 100 parts by mass in total Carbodiimide (hydrolysis inhibitor), obtains resin composition, the composition ratio of D lactic acid (D type) and L lactic acid (L type) of described poly (DL-lactic acid) resin is L type in molar ratio:D Type = 99:1. Using this resin composition, the figure 1 and figure 2 The hinged lid shown is injection molded. The obtained hinge lid was formed and stored at room temperature for 3 days, and then the determination of the hinge strength and the evaluation of the snap button function were carried out. The results are shown in Table 1.
Embodiment 2
[0065] Using the same polylactic acid and polybutylene succinate as those used in Example 1, dry-blended them at a ratio of 50:50 by mass, and mixed 0.5 parts by mass of erucic acid with respect to a total of 100 parts by mass thereof The bis(dipropylphenyl) carbodiimide of amide and 1.5 mass parts obtains resin composition, uses this resin composition, will image 3 and Figure 4 The hinged lid shown is injection molded. The obtained hinge lid was formed and stored at room temperature for 3 days, and then the determination of the hinge strength and the evaluation of the snap button function were carried out. The results are shown in Table 1.
Embodiment 3
[0067]Using the same polylactic acid and polybutylene succinate used in Example 1, it is dry mixed in the ratio of (polylactic acid): (polybutylene succinate)=30:70 by mass ratio , 0.5 parts by mass of erucamide and 1.5 parts by mass of bis(dipropylphenyl)carbodiimide were blended with respect to the total of 100 parts by mass. Next, in the same manner as in Example 1 except for this, figure 1 and figure 2 The hinged lid shown is injection molded. The obtained hinge lid was molded and stored at normal temperature for 3 days, and then immersed in warm water at 45° C. for 2 months. Thereafter, measurement of hinge strength and evaluation of snap function were performed. The results are shown in Table 1.
PUM
| Property | Measurement | Unit |
|---|---|---|
| flexural modulus | aaaaa | aaaaa |
| flexural modulus | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More