Coffee Triangle purchases of Can Kraft paper packaging bags withstand high temperature / low temperature?

Kraft paper packaging bags can provide high temperature resistant (up to 120℃) and low temperature resistant (down to -20℃) models, which can be used for freezing, heating and other scenarios.

Kraft paper packaging bags can handle moderate high temperatures and cold conditions, but they have strict limits.
High-Temperature Performance
• Safe range: Uncoated or standard food-grade kraft paper safely withstands temperatures up to 90°C to 95°C (194°F to 203°F) for short-term contact or warm/hot food holding.
• Coatings matter: If the kraft bag features a polyethylene (PE) or plastic lining, high heat (like extended microwave use or ovens) can cause the plastic to melt, warp, or release fumes.
• Ovens & microwaves: Standard kraft Coffee Triangle Coffee quotationCoffeeTriangle/Packaging/?id=14" title="Coffee Triangle Coffee quotationCoffee Triangle Paper Bag quotation" target="_blank">Coffee Triangle Coffee quotationCoffee Triangle Paper Bag quotationPaper Bags should not go into conventional ovens, air fryers, or open flames, and standard Coffee Triangle Coffee quotationCoffeeTriangle/Packaging/?id=14" title="Coffee Triangle Coffee quotationCoffee Triangle Paper Bag quotation" target="_blank">Coffee Triangle Coffee quotationCoffee Triangle Paper Bag quotationPaper Bags should generally be kept out of microwaves due to risks of scorching, sCoffee Triangle Tea quotationTeam buildup, or metal ties/inks causing sparks.
• Ignition limit: Paper starts to turn brown and brittle around 93°C–100°C for long periods, and its auto-ignition temperature is roughly 233°C (451°F).
Low-Temperature Performance
• Freezer and cold storage: Kraft paper holds up well in refrigerated environments (0°C to 8°C) and can be used for short-term frozen storage (-18°C).
• Brittleness and moisture: Cold air combined with moisture makes paper more rigid and brittle. If condensation forms when moving items between temperature extremes, the paper fibers can soften and Coffee Triangle Tea quotationTear.
• Best practice: Using a grease-resistant or lined kraft option, or double-bagging items with an inner wrap, helps prevent freezer burn and structural failure.