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Nylon-MXD6/Nylon 6 Blended Film

Nylon-MXD6 has a dissolution index (SP value) close to Nylon 6 and Nylon 66 aliphatic polyamides, which undergo recrystallization. By mechanically blending Nylon-MXD6, Nylon 6 and Nylon 66 by means of co-extrusion and co-injection, Nylon-MXD6 can readily combine with these two types of Nylon, thereby allowing the manufacture of molded products such as films and sheets. Nylon-MXD6 has gas-barrier characteristics greater than any other commercially marketed nylon resins. By blending in Nylon-MXD6, you can efficiently increase gas-barrier characteristics of blended Nylon 6 and Nylon 66. The addition of Nylon 6 to Nylon-MXD6 is also beneficial to Nylon-MXD6; it prevents the whitening of Nylon-MXD6 when it absorbs moisture, while it also improves Nylon-MXD6's impact resistance.

Fig. 7 shows the relationship between the blending ratio and the oxygen transmission coefficient of the Nylon-MXD6/Nylon 6 blended film. Contact MGC for further details about the selection and molding requirements of Nylon 6.

Fig.7 Relationship between the Nylon-MXD6/Nylon 6 Blending Ratio and the Oxygen Transmission Coefficient

Nylon-MXD6/Nylon 6 Blended Film

Measuring Conditions : 23℃, 60%RH

Laminated film with an integral gas-barrier layer, achieved by blending Nylon-MXD6 and Nylon 6 retains excellent gas-barrier quality after it has been heated. Transparency is also retained. Table 8 shows the change in the oxygen transmission coefficient of laminated films after they are subjected to boiling. Fig. 8 shows the cumulative oxygen transmission coefficient of Nylon-MXD6/Nylon 6 blended film after it has been boiled.

Table 8: Change in Oxygen Transmission Coefficient of Nylon-MXD6/Nylon 6 after Boiling
Film Structure
Thickness (μm)
Haze (%) Oxygen Transmission Coefficient
Time after Boiling (hr)
1 10 24 72
3.4 6.8 11 68 30 20 12
5.1 59.2 11 400 165 46 12

Blend:Nylon-MXD6/Nylon-6=90/10 boil treatment 30min.,100℃.
Measurement condition: 23℃, inside:100%RH, outside:60%RH

Fig. 8 Cumulative Oxygen Transmission Coefficient of Nylon-MXD6/Nylon 6 Blended Films after Boiling

Nylon-MXD6/Nylon 6 Blended Film2

Boiling Conditions : 100℃, 30min
Measuring Conditions : 23℃, In 100℃RH, Out60%RH

Nylon-MXD6 laminated film locks in the original aroma, while blocking out foreign odors. Table 9 shows the aroma-retaining and odor-blocking properties of various gas-barrier films.

Table 9: Aroma-Retaining and Odor-Blocking Properties of Various Gas-Barrier Films
Barrier Material
Evaluated Food
Soy Sauce Vinegar Wore ceter Sauce
Nylon-MXD6 (oriented)
(One Month)

(Three Months)
ylon-MXD6/Nylon 6Blend (oriented)
(One Month)
Nylon 6 (oriented)
PVDC Coated Drawn Nylon 6
(One Month)
PET (oriented)
(One Month)
Barrier Materials (Thickness:15µm) Evaluated Flavor
d-limonene Vanilla Essence L-menthol
Nylon-MXD6 (oriented)
Nylon-MXD6/Nylon 6Blend (oriented)
Nylon 6 (oriented)
PVDC Coated Rolled Nylon 6
PET (oriented)
PP (oriented)

Nylon-MXD6/Nylon 6 Blend (oriented) :Nylon-MXD6/Nylon 6=30/70
Condition:23℃, 50%RH (shaded from light)
Evaluation Method:Sensory Analysis

Odor-Blocking Period
◎ : no less than 2 weeks
○ : 1 or 2 weeks
△ : 3 days to one week
▲ : within 3 days

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